feat: 4 node localnet infra

[technicallyty]

Description

adds some local infra to run a 4-node network

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[zsystm]

@technicallyty

It would be great if we can eventually support IBC E2E testing as well. While it doesn't have to be part of this PR, having an environment that enables IBC E2E — especially between cosmos/evm and other Cosmos chains — would allow us to test a much broader set of scenarios, including cross-chain flows.

By the way, I really like this PR. With multiple nodes, we can now cover interesting cases like slashing and unjailing, which weren’t feasible in single-node setups.

[technicallyty]

@technicallyty

It would be great if we can eventually support IBC E2E testing as well. While it doesn't have to be part of this PR, having an environment that enables IBC E2E — especially between cosmos/evm and other Cosmos chains — would allow us to test a much broader set of scenarios, including cross-chain flows.

By the way, I really like this PR. With multiple nodes, we can now cover interesting cases like slashing and unjailing, which weren’t feasible in single-node setups.

glad to hear that! i can look into IBC support when i have some free time. You may also be interested in my other PR here: #304

it adds the systemtest cosmos-sdk framework to easily run Go tests against the 4 node network. if you're not familiar with this framework, you can see some uses here: https://github.com/cosmos/cosmos-sdk/blob/7f7c41e4aa56ec3bc9ffc1a61914f6f73b3db40d/tests/systemtests/staking_test.go#L14