feat: Add create2 library linking

[rackstar]

Context

Since we introduced an external library, we now need to add library linking steps in both find-salt and deploy create2 scripts.

Changes proposed in this pull request

• add libraries.json
• add library linking find-salt / deploy

Test plan

Add validation checks on the scripts and tested manually for StakingPool.sol find-salt

Checklist

• [x] Rebased the base branch
• [ ] Attached corresponding Github issue
• [x] Prefixed the name with the type of change (i.e. feat, chore, test)
• [x] Performed a self-review of my own code
• [x] Followed the style guidelines of this project
• [x] Made corresponding changes to the documentation
• [x] Didn't generate new warnings
• [x] Didn't generate failures on existing tests
• [ ] Added tests that prove my fix is effective or that my feature works

Review

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• :rocket: = Feedback

[rackstar]

tenderly fork test:

manually deployed these contracts:

• StakingExtrasLib - 0xcafea5b1bb5f9Bb7AEF86376802A77a21c323E81
• StakingPool - 0xcafea95d5e0256418186872A41127f1Ae087e5c8
• Cover - 0xcafeaCcB60a5a65b028b3827F047Af0099d2F426

Testing: For some reason the tx failed (maybe my input was wrong) but the simulated tx shows Cover successfully calls StakingPool and then StakingPool successfully calls StakingPoolExtrasLib which indicates the library linking worked:

• Invoked Cover.updateStakingPoolsRewardShares
• Cover calls StakingPool.updateRewardsShares(uint256,uint256[])
  • (MinimalBeaconProxy => 0xcafea95d5e0256418186872a41127f1ae087e5c8).0x45d85a06
• StakingPool.updateRewardsShares calls StakingExtrasLib.updateRewardsShares()
  • (MinimalBeaconProxy => 0xcafea5b1bb5f9bb7aef86376802a77a21c323e81).0x6c7c251a