Enable maven plugin for those used for GH checks

[igarashitm]

For example, SonarCloud
https://docs.sonarcloud.io/advanced-setup/ci-based-analysis/sonarscanner-for-maven/

and Codecov
maybe with jacoco or something, hopefully even setting a coverage threshold
https://about.codecov.io/tool/jacoco/

If we keep those as GH checks, we should enable maven plugin with exactly same ruleset so that we can run it before submitting a PR. Or, remove those for PR checks. We might be able to keep the comments from those for the reference, but not cause PR checks to fail.

[stale]

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