Alpha fixes ver.01

Changes:
Made it so the units in the editor can be fleshed out by enemy or player. Might need to change it if we have too many units.
Turn order has a list of player and enemy units.
Seperated out Unit script into enemy unit script and player unit script, both inheriting from unit script.
Player units can now attack and kill enemy units.

Notes:
Will need to change structure interaction. Might depend on if we plan for he player to have structures too.
Give units an attack range, right now they can attack units in their move range.