[ENHANCEMENT]: Add some documentation

[moxie-coder]

Is your suggestion a solution to a problem? Please specify which one.
There’s simply no documentation for this library from what I’ve found so far, so some documentation would help out

Describe the solution you are proposing
Simply add documentation, makes it easier to use the library then

[Cheemsandfriends]

this is an upcoming work in progress!
I still need to figure that API part stuff out, aswell as a whole website regarding FlxAnimate's intrinsicate details and all that jazz

Right now we've decided to go on a break, but it'll be done hopefully sooner than later