feat: ID-4134: support bootstrap flow for v1 contracts first transaction.

[naveen-imtb]

Note

Adds an immutable-signer bootstrap path for first-transaction auth and updates constructors and deployment scripts to pass the signer contract.

• Contracts:
  • ModuleAuthDynamic:
    • Add IMMUTABLE_SIGNER_CONTRACT and imageHashOfImmutableSigner().
    • Extend _isValidImage to accept the immutable-only signer image hash when no stored image hash exists.
  • MainModuleDynamicAuth:
    • Update constructor to accept _immutableSignerContract and pass through to ModuleAuthDynamic.
  • Mocks (MainModuleMockV1/V2/V3): update constructors to include immutable signer param.
• Scripts:
  • scripts/deploy.ts: deploy ImmutableSigner before MainModuleDynamicAuth and pass its address; adjust deployment flow and output.
  • scripts/step4.ts: add immutableSignerAddress and pass to MainModuleDynamicAuth; update hardcoded addresses and logs.
• Tooling:
  • Add lib/ to .gitignore.

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