Add fuzz testing and open up scripts

[caymansimpson]

Fuzz:

1. Create a bunch of edge case teams (speed, pivot, move, residual, field/SC/Weather, ability, Effects, items)
2. Load teams and have them battle each other 100s of times
3. Check inference, and throw errors for ground truth violations, check bad battle order returns through custom player class
4. Print errors nicely with updates, tracking speed of games and logging them to files

Also open up scripts and change gitignore to be file specific

[caymansimpson]

Have to add poke-env features that were flagged by VGC fuzz testing. So far:

1. Implementing Pokemon.name that will help construct a Showdown identifier
2. Add temporary_ability and temporary_types for moves like Skill Swap and Soak
3. Handle Effect ending
4. Handle "-singlemove"

[caymansimpson]

Import FuzzTest method to threaded FuzzTester
Have FuzzTest pull from print_observation from inference_utils