Final Bachelor build

This build is the final state we where able to get the game into before our deadline.
A lot of fixes have been added such as 
- Fixed infinate ranged attacks

- Fixed UnitMarker not marking first unit

- Added Simple end bosses

- Added Music to the game

- Added more UI assets

- Reworked StartScreen background

- Reworked UI icons

- Added option to move camera with WASD

- Added gameSpeed variable in the option menu

- And much much more!