Tower attacks and enemy system overhauled!

I know it would take a while and I apologize, I have lied :P

The new system will allow much more flexibility and creativity with enemies as well as decreased time to dev each type!

In this update I have done the following:

-- Reworked how towers attack and find enemies (Each tower now attacks all enemies)

-- reworked enemy spawning system (now is all one type of object with a variable to determine stats like hp and speed and more to come)

     - These used to be seperate objects for each type and made it harder and longer to add new enemies with different variations (this is why things were color specific before)

-- Added a new font for the ui that displays score and gold as well as the price for towers in the shop

With these updates there may be some weird interactions so please let me know if anything seems off.

In the meantime each tower has a specified purpose, since there are no special models atm lets see who can guess which tower does what ;P