Add new plugin sbt-version-policy-dynver

[alejandrohdezma]

💻 How to review this PR?

This PR was created with the idea of being reviewed commit by commit. Each commit contains an incremental change that makes it easier to review. Also some of the commits contain additional information in their description to help understand why the change was made.

I also recommend checking "Hide whitespace" when reviewing this PR!

🚀 What's included in this PR?

📦 Build changes

• Enable using the plugin directly on its own build, instead of using the latest version.
• Add sbt-modules to the build to allow creating SBT sub-projects under modules by default and provide some other "goodies" like deactivating publishing for anything that is not a sub-module (no need for explicit root module).
• Adds a few fixes to GHA CI files.

✨ New sbt-version-policy-dynver plugin

A new module containing a plugin has been added to the build. This plugin just enables...

versionPolicyIgnoredInternalDependencyVersions := Some("^\\d+\\.\\d+\\.\\d+\\+\\d+".r)

...at the build level as stated in the "DynVer" section of the README to reduce boilerplate of libraries's build files that are using this plugin.

[julienrf]

Hello, thank you for your help @alejandrohdezma!

However, I am not sure creating a new plugin for one setting is worth it, to be honest. I prefer having just sbt-version-policy. That being said, some of the changes of your PR would be very welcome:

• d0c7370
• c7171ec (assuming the tests still pass)
• f519ece

Would you be interested in submitting only those changes?

[alejandrohdezma]

Hello, thank you for your help @alejandrohdezma!

However, I am not sure creating a new plugin for one setting is worth it, to be honest. I prefer having just sbt-version-policy. That being said, some of the changes of your PR would be very welcome:

• d0c7370
• c7171ec (assuming the tests still pass)
• f519ece

Would you be interested in submitting only those changes?

Hey @julienrf, sure, I just reverted the other 3 commits.

[julienrf]

Thank you!