[research] method counts

[mirceanis]

Find a way to count the method references in each lib module.
Keeping below the dex limit is tough but it has to start somewhere.
This number should be as low as possible so it should form a baseline to be checked against when making changes.

[mirceanis]

a starting anchor: https://github.com/KeepSafe/dexcount-gradle-plugin