Automated snapshot packages publication

[DariusIMP]

Describe the release item

Context

Changes done on the codebase for both Kotlin and Java bindings are not published until the next release is performed. This causes that fixes or new features that are already in the codebase and ready to be used are not available for users, unless they install the repository and do the whole setup consisting on publishing locally the library.

Solution

Modifying the github workflows to automatically publish snapshot packages from the main branch, providing the users packages with the last version changes on the codebase.
Github packages provides support for such kind of packages, overriding old snapshot versions.