Setup core transitive dependency

[DanielMartinus]

This PR does two things:

• When developing the local core module is used to developer against the latest changes of core.
• When publishing konfetti-xml and konfetti-compose the core module is pulled from the remote Maven repository. This way the pom refers to a remote copy of konfetti-core so that it works as a transitive dependency.

This is a follow-up on https://github.com/DanielMartinus/Konfetti/pull/290.

When building a release the core module needs to be pulled from the remote maven repository so that it can be included in the pom file. Other option was using fat aar to include core's files. Though what I read is that maintaining fat aar can be lots of work. One downside of this solution is that core always needs to be published first before publishing konfetti-xml and konfetti-compose.

[PaulKlauser]

@DanielMartinus I'm curious if you saw my comment here: https://github.com/DanielMartinus/Konfetti/pull/290#issuecomment-1040869971

The solution you have in this PR gets the job done, but it is adding complexity for something the maven-publish plugin is built to handle