feat: add mav2 signer (#1203)

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- [ ] Did you add new tests and confirm existing tests pass? (`yarn test`)
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<!-- start pr-codex -->

---

## PR-Codex overview
This PR introduces a `SingleSignerValidationModule` for managing single signer validation in the `ma-v2` smart contract system. It includes functions for packing signatures and encoding install/uninstall data, along with the necessary ABI definitions.

### Detailed summary
- Added `PackSignatureParams` type and `packSignature` utility in `utils.ts`.
- Implemented `SingleSignerValidationModule` with methods for encoding install/uninstall data in `single-signer-validation/module.ts`.
- Enhanced `singleSignerMessageSigner` functionality for signing operations in `single-signer-validation/signer.ts`.
- Defined the ABI for `SingleSignerValidation` in `single-signer-validation/abis/singleSignerValidation.ts`.
- Created `MAV2FactoryAbi` and `smaV2Abi` with comprehensive function definitions and events in their respective files.

> ✨ Ask PR-Codex anything about this PR by commenting with `/codex {your question}`

<!-- end pr-codex -->

account-kit/smart-contracts/src/ma-v2/modules/single-signer-validation/abis/singleSignerValidation.ts

@@ -0,0 +1,330 @@
+export const singleSignerValidationAbi = [
+  {
+    type: "function",
+    name: "moduleId",
+    inputs: [],
+    outputs: [
+      {
+        name: "",
+        type: "string",
+        internalType: "string",
+      },
+    ],
+    stateMutability: "pure",
+  },
+  {
+    type: "function",
+    name: "onInstall",
+    inputs: [
+      {
+        name: "data",
+        type: "bytes",
+        internalType: "bytes",
+      },
+    ],
+    outputs: [],
+    stateMutability: "nonpayable",
+  },
+  {
+    type: "function",
+    name: "onUninstall",
+    inputs: [
+      {
+        name: "data",
+        type: "bytes",
+        internalType: "bytes",
+      },
+    ],
+    outputs: [],
+    stateMutability: "nonpayable",
+  },
+  {
+    type: "function",
+    name: "replaySafeHash",
+    inputs: [
+      {
+        name: "account",
+        type: "address",
+        internalType: "address",
+      },
+      {
+        name: "hash",
+        type: "bytes32",
+        internalType: "bytes32",
+      },
+    ],
+    outputs: [
+      {
+        name: "",
+        type: "bytes32",
+        internalType: "bytes32",
+      },
+    ],
+    stateMutability: "view",
+  },
+  {
+    type: "function",
+    name: "signers",
+    inputs: [
+      {
+        name: "entityId",
+        type: "uint32",
+        internalType: "uint32",
+      },
+      {
+        name: "account",
+        type: "address",
+        internalType: "address",
+      },
+    ],
+    outputs: [
+      {
+        name: "",
+        type: "address",
+        internalType: "address",
+      },
+    ],
+    stateMutability: "view",
+  },
+  {
+    type: "function",
+    name: "supportsInterface",
+    inputs: [
+      {
+        name: "interfaceId",
+        type: "bytes4",
+        internalType: "bytes4",
+      },
+    ],
+    outputs: [
+      {
+        name: "",
+        type: "bool",
+        internalType: "bool",
+      },
+    ],
+    stateMutability: "view",
+  },
+  {
+    type: "function",
+    name: "transferSigner",
+    inputs: [
+      {
+        name: "entityId",
+        type: "uint32",
+        internalType: "uint32",
+      },
+      {
+        name: "newSigner",
+        type: "address",
+        internalType: "address",
+      },
+    ],
+    outputs: [],
+    stateMutability: "nonpayable",
+  },
+  {
+    type: "function",
+    name: "validateRuntime",
+    inputs: [
+      {
+        name: "account",
+        type: "address",
+        internalType: "address",
+      },
+      {
+        name: "entityId",
+        type: "uint32",
+        internalType: "uint32",
+      },
+      {
+        name: "sender",
+        type: "address",
+        internalType: "address",
+      },
+      {
+        name: "",
+        type: "uint256",
+        internalType: "uint256",
+      },
+      {
+        name: "",
+        type: "bytes",
+        internalType: "bytes",
+      },
+      {
+        name: "",
+        type: "bytes",
+        internalType: "bytes",
+      },
+    ],
+    outputs: [],
+    stateMutability: "view",
+  },
+  {
+    type: "function",
+    name: "validateSignature",
+    inputs: [
+      {
+        name: "account",
+        type: "address",
+        internalType: "address",
+      },
+      {
+        name: "entityId",
+        type: "uint32",
+        internalType: "uint32",
+      },
+      {
+        name: "",
+        type: "address",
+        internalType: "address",
+      },
+      {
+        name: "digest",
+        type: "bytes32",
+        internalType: "bytes32",
+      },
+      {
+        name: "signature",
+        type: "bytes",
+        internalType: "bytes",
+      },
+    ],
+    outputs: [
+      {
+        name: "",
+        type: "bytes4",
+        internalType: "bytes4",
+      },
+    ],
+    stateMutability: "view",
+  },
+  {
+    type: "function",
+    name: "validateUserOp",
+    inputs: [
+      {
+        name: "entityId",
+        type: "uint32",
+        internalType: "uint32",
+      },
+      {
+        name: "userOp",
+        type: "tuple",
+        internalType: "struct PackedUserOperation",
+        components: [
+          {
+            name: "sender",
+            type: "address",
+            internalType: "address",
+          },
+          {
+            name: "nonce",
+            type: "uint256",
+            internalType: "uint256",
+          },
+          {
+            name: "initCode",
+            type: "bytes",
+            internalType: "bytes",
+          },
+          {
+            name: "callData",
+            type: "bytes",
+            internalType: "bytes",
+          },
+          {
+            name: "accountGasLimits",
+            type: "bytes32",
+            internalType: "bytes32",
+          },
+          {
+            name: "preVerificationGas",
+            type: "uint256",
+            internalType: "uint256",
+          },
+          {
+            name: "gasFees",
+            type: "bytes32",
+            internalType: "bytes32",
+          },
+          {
+            name: "paymasterAndData",
+            type: "bytes",
+            internalType: "bytes",
+          },
+          {
+            name: "signature",
+            type: "bytes",
+            internalType: "bytes",
+          },
+        ],
+      },
+      {
+        name: "userOpHash",
+        type: "bytes32",
+        internalType: "bytes32",
+      },
+    ],
+    outputs: [
+      {
+        name: "",
+        type: "uint256",
+        internalType: "uint256",
+      },
+    ],
+    stateMutability: "view",
+  },
+  {
+    type: "event",
+    name: "SignerTransferred",
+    inputs: [
+      {
+        name: "account",
+        type: "address",
+        indexed: true,
+        internalType: "address",
+      },
+      {
+        name: "entityId",
+        type: "uint32",
+        indexed: true,
+        internalType: "uint32",
+      },
+      {
+        name: "newSigner",
+        type: "address",
+        indexed: true,
+        internalType: "address",
+      },
+      {
+        name: "previousSigner",
+        type: "address",
+        indexed: false,
+        internalType: "address",
+      },
+    ],
+    anonymous: true,
+  },
+  {
+    type: "error",
+    name: "InvalidSignatureType",
+    inputs: [],
+  },
+  {
+    type: "error",
+    name: "NotAuthorized",
+    inputs: [],
+  },
+  {
+    type: "error",
+    name: "NotImplemented",
+    inputs: [],
+  },
+  {
+    type: "error",
+    name: "UnexpectedDataPassed",
+    inputs: [],
+  },
+];

account-kit/smart-contracts/src/ma-v2/modules/single-signer-validation/module.ts

@@ -0,0 +1,49 @@
+import { encodeAbiParameters, type Address, type Hex } from "viem";
+
+import { singleSignerValidationAbi } from "./abis/singleSignerValidation.js";
+
+const addresses = {
+  default: "0xEa3a0b544d517f6Ed3Dc2186C74D869c702C376e",
+} as Record<number | "default", Address>;
+
+const meta = {
+  name: "SingleSignerValidation",
+  version: "alpha.1",
+  addresses,
+};
+
+// Todo: some unified type for ERC-6900 v0.8 modules. I couldn't figure out how to parameterize the class itself over the abi type parameters for onInstall and onUninstall.
+export const SingleSignerValidationModule = {
+  meta,
+  abi: singleSignerValidationAbi,
+  encodeOnInstallData: (args: { entityId: number; signer: Address }): Hex => {
+    const { entityId, signer } = args;
+
+    return encodeAbiParameters(
+      [
+        {
+          type: "uint32",
+          value: entityId,
+        },
+        {
+          type: "address",
+          value: signer,
+        },
+      ],
+      [entityId, signer]
+    );
+  },
+  encodeOnUninstallData: (args: { entityId: number }): Hex => {
+    const { entityId } = args;
+
+    return encodeAbiParameters(
+      [
+        {
+          type: "uint32",
+          value: entityId,
+        },
+      ],
+      [entityId]
+    );
+  },
+};