add RL experiments

[Sid-Bhatia-0]

1. Create an RL environment.
2. Add macros generate_getters and generate_setters (both inside RC and experiment files) from https://github.com/JuliaReinforcementLearning/GridWorlds.jl/blob/c0e86bb6c33819f0e4a4cefe0284d985d0474ed3/src/abstract_grid_world.jl#L12
3. Add RL experiment in the style of RLZoo.
4. Add RL experiment with a random policy.
5. Add ability to save gif in random_policy.jl using packages FileIO and ImageMagick.
6. Add a method for is_agent_colliding that takes in the type of object for checking collision with.