v1.42 Enemy spells skills and sfx

We've done more updates!

- Enemies now use skills and spells
- Enemies can now call for aid.
- Enemies now have types
- Added sprites/sfx for venom spit, life drain, bite, bash and wing attack. - thank you Shade for providing the sprites.
- Enemies now have several different types of roles that they can perform, and each one uses different skills and spells.