Modern Game Tycoon

Changelog:
Full rework of main game mechanics:

Worker skill system,
Game features system,
Game development system,
Game sell system,
Marketing system,

New game engines,
New game genres,
Rebalance of engines, platforms, themes, genres,
Added publishers,
Added game updates,
Added sprites for created games,
All game ui reworked,
Added shadows and some other shader changes,
Save/Load system fixed,
Better control system,
Other small changes.