Add godox linter and resolve trivial TODO comments

[stana-miric]

This PR includes:

• Adding godox linter for detecting unresolved TODOs and FIXMEs
• Resolving trivial TODOs
• Marking TODOs which are going to be resolved in newly created tasks with nolint
  Tasks created for unsresolved TODOs are: EVM-519, EVM-521, EVM-522, EVM-523, EVM-524, EVM-525, EVM-527, EVM-528, EVM-529, EVM-540, EVM-541, EVM-542

Changes include

• Bugfix (non-breaking change that solves an issue)
• Hotfix (change that solves an urgent issue, and requires immediate attention)
• New feature (non-breaking change that adds functionality)
• Breaking change (change that is not backwards-compatible and/or changes current functionality)

Checklist

• I have assigned this PR to myself
• I have added at least 1 reviewer
• I have added the relevant labels
• I have updated the official documentation
• I have added sufficient documentation in code

Testing

• I have tested this code with the official test suite
• I have tested this code manually

Additional comments

Note that ValidatorSetAddr and StateReceiverAddr are removed form PolyBFTConfig, since we have those addresses in the contracts package. As I discuss it with Stefan, it should not affect backward compatibility since they are not included in the blockchain

[Stefan-Ethernal]

Generally LGTM, nice job!