fix: refactoring and bug fixes after player testing

fix: small edge case fixes; minor cleanups; project now builds and .jar is executable

fix: project builds now and generates target directory

fix: user interface tweaks; add clear screen; project doesn't build though, only runs via IDE

fix: little tweaks in leveling up after some user testing

fix: refactor some logging, fix save/load mechanism and underlying bugs; cleanup

feat: clear one todo about battle messages; implement battle rewards when player wins battle

feat: revamp enemy list completely and how it's handled; fix resource management with new ability and enemy factories; cleanup; project now compiles and can start up

feat: introduce game state for the game's main loop; extract movement from Game class into a separate movement manager

feat: refactor player choices in main game loop and main menu choices

feat: start refactoring main game loop; refactor main menu choices and player creation

feat: refactor movement of the player in the game loop

feat: complete battle controller fight loop;

feat: complete player abilities facade engine introduction; remove old deprecated string array ability management system

feat: refactor abilities; halfway through; WIP; separate layers