Added ClearStacks to ScoreBar..

This will stop the score increase and decrease between 2 states.
Clear function for Spawner.
GameState's Activate now clears Spawner..

All states now call the base but only AgroState committed for now, others in next few commits.
Added 2 new States..

TransitionState to transition between 2 StateMachines.
EnrageState which doesnt do anything yet. It will spawn only enemies and all of them will target the player. After 10 seconds the State will clear. Multiplier is forced to x2 during Enrage.
Changes to RegularState..

Constructor no longer takes an int array. It now accepts limitless parameters after the isTough boolean.
Activate calls it's base.
Added StateMachine logic to BossStateMachine.