Remove More Unnecessary Stuff

The template includes these needlessly for our purposes.
Add Basic Title State

Just displays a title for now.
Add and Use Anton Font for Title

Adds the Anton font and uses it for the title screen.

To help preserve the licenses of external resources I did not create, such as
the SIL Open Font License 1.1 for Anton, these resources will go in
external_assets with their licenses. I have included a notice to this effect.
Delete AssetPaths.hx

I just don't find this feature of HaxeFlixel useful.