chore: add automated checks for syncing with base repository (wip)

[qdm12]

Rationale

Since syncing this repository with github.com/ethereum/go-ethereum will be rather complex, especially the first time, we may overlook some small elements such as import names. It would be nice to have CI checks to improve the certainty the syncing was done properly. The following list is a work-in-progress and I plan to add more as I get more familiar with the project.

Implementation

• Check every import statements uses github.com/ava-labs/libevm instead of github.com/ethereum/go-ethereum done by .github/workflows/rename-module.yml
• Check go.mod module name stays github.com/ava-labs/libevm done by .github/workflows/rename-module.yml
• Check CI steps Go version matches the go.mod version of the repository
• Use golangci-lint's option new-from-rev: HEAD where HEAD is set automatically to the base fork commit

[ARR4N]

Thanks for thinking through this; automation is really important for safety so I'm glad to see that that's where your ideas are focussed.

• Check every import statements uses github.com/ava-labs/libevm instead of github.com/ethereum/go-ethereum
• Check go.mod module name stays github.com/ava-labs/libevm

The first step of an upstream sync is to use this automated workflow, which already covers these two. Feel free to add more checks / smoke tests as you think of them.