[POC] Check licenses

[Irineu333]

Study a way to check the licenses of our dependencies, especially transitive ones.

Candidates:

• https://github.com/cashapp/licensee

[PatrykMis]

Great suggestion, it will be nessesary at some point. And what about AboutLibraries? It's widely used, well-maintained, but I don't have experience with either of them.

Edit: I understood better what are you trying to acheave. Instead of about dialog with all libs licenses, you want to just fail the build if license does not match specified criterias. So, Licensee would be a good option for this.

[Irineu333]

From what I understood reading the readme, this library is more for visual verification. It's also important, but this issue is about finding a library that validates whether the app is using libraries compatible with our license.