[Nullability Annotations to Java Classes] Add wordpress.lint Dependency

[ParaskP7]

This PR adds wordPress-lint checks to the project (2.0.0).

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To test:

1. Verifying that all the CI checks are successful (focus on the Lint related check and its report).
2. Verify that the new MissingNullAnnotationOn* correctness related rules are reporting as expected. For a reference, see screenshot below:

[wzieba]

Suggested change

includeGroup "org.wordpress.lint"

The group for lint library is org.wordpress - there's no need to add the other group (which is not valid AFAIK, lint is the name of a module)

[ParaskP7]

Yeap, I wasn't 100% sure about adding org.wordpress.lint too, I just followed the same pattern across all of our other repos, see this Login repo as an example... 🤷

Wdyt @wzieba ? 🤔

[ParaskP7]

Also to make the example module work on the Catalog repo, I added this line there too, following the Adding a new dependency documentation, as I was indeed hitting a problem on it... 🤷

Build the catalog & example projects - if you get Could not find {dependency} error, make sure the repository for the new dependency you've added is included in example/settings.gradle.kts

[wzieba]

Yeap, I wasn't 100% sure about adding org.wordpress.lint too, I just followed the same pattern across all of our other repos, see this Login repo as an example... 🤷

It seems that this part in Login is also incorrect - it adds a valid group org.wordpress but also invalid and unnecessary one: org.wordpress.fluxc.

Also to make the example module work on the Catalog repo, I added this line there too, following the Adding a new dependency documentation, as I was indeed hitting a problem on it... 🤷

Yes, this line is correct - it adds a new module (not group) so it specifies lint module with it's group: org.wordpress.

[ParaskP7]

Got it, thanks for the explanation @wzieba ! 🥇

Done: 1e055a6