go.md: add module graph

[jmank88]

https://smartcontract-it.atlassian.net/browse/CRE-710

And include it in the check added in #26

Related:

• go.md: add module graph chainlink-ton#125

[jmank88]

The go tool approach used in chainlink-ton doesn't work here since there is no root level go.mod file 🤔

[github-actions]

No CODEOWNERS file detected - @jmank88

This repository doesn't contain a CODEOWNERS file. Please add one at one of the following paths:

1. CODEOWNERS (root of repository)
2. .github/CODEOWNERS

If this repository is owned/used by a single team the default entry for a CODEOWNERS would be:

* @smartcontractkit/<your team>

For more information see: https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners

[jmank88]

The go tool approach used in chainlink-ton doesn't work here since there is no root level go.mod file 🤔

Fixed though it's not pretty. Open to simplifications 🤷

[silaslenihan]

LGTM