Big Update v0.5.0

Big update that improves the variety of combat strategies and (hopefully) will allow me to monetize the effort I've put into this game:

- Chibit Families: A new attribute that all chibits have, which modifies their efficiency in some areas as well as working better if they make combos.

- Store (Play Store): Now there is a store that tries to be as less invasive as possible. The economy of the game has NOT been modified to include the store, so I hope that the purchases made there are only:

1. A "voluntary payment" for the game.
2. Improve in the game without grinding.

Interface improvements were also included:
- Buttons position
- Confirmation and Tips messages
- HUD display

And finally, several minor bugs were corrected and a very serious one that appeared unexpectedly in the last few days for which it was impossible to fight normally.