Almost full improvements for game UI#2

Open

marlonlom wants to merge 6 commits intoaliceresponde:masterfrom

marlonlom:feat/almost_like_new

Commits on Apr 19, 2020

Almost like new; organized the packages by feature; adding game logic and rules for game result state (success,failed,playing), also, added unit tests for core
marlonlom
committed
Adjusted some gaming rule for the 'very easy' level. Finished adding game won and failed result screens.
marlonlom
committed

Commits on Apr 20, 2020

Commits on Apr 23, 2020

Added unit tests for dek generation and pairing features; fixed max scoring feature; added buttons for retunrning to lobby from game success/failed screens
marlonlom
committed

Commits on Apr 24, 2020

Added sounds, fixed some game status variables for controlling sounds playing sequence.
marlonlom
committed