Feature Request: Add linting to `template/contracts/`

[kyhyco]

Describe the solution you'd like

Took a look at linters for solidity:

solhint

solhint is a linter with rules. Similar control mechanisms to eslint, supporting disabling rules via comments and allow you to create new rules.

solhint provides additional styling rules that augments forge fmt or prettier-solidity-plugin. Pretty neat.

ethlint

Project appears to be inactive

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ethlint is out as it is inactive.

For solhint, we need to add two files: .solhint.json and .solhintignore.

In .solhint.json, we need to decide which rules sets to follow. solhint:recommended option looks good but would like to hear from more experienced solidity developers on which rule sets to enable / how their experience with solhint has been.

In .solhintignore, lib should be added as we don't want to lint third party imports.

Been using solhint for a couple days and it's been decent so far.

Describe alternatives you've considered.

No response

[awilliams1-cb]

Yeah besides forge fmt, solhint is the only other linter I've seen used before. forge fmt does have its own section in the config file that we could also set to get more use out of it. Regarding which rules to use for solhint, the recommended Best Practices and Style Guide Rules sections look good. However, the Security Rules look pretty out of date / not of high fidelity to be worth enabling.

[danimesq]

Additional suggestion for tests: Use Branching Tree Technique for Solidity tests, through bulloak (#523)