refactor: Add __init__.py to shorten import path

Author: CinquilCinquil

docs/pysc2_usage.md

@@ -10,11 +10,11 @@ such as `no_op` or `Move_pt`.
 But in URNAI, due to encapsulation, the call is done in the following manner:
 `X[F].run()`. Where `X` is a dict containing classes for each of the action functions
 in PySC2, and `F` is a string with the name of the action function you are calling.
-The dictionaries mentioned above are stored in the file `sc2_actions.py`, and can
+The dictionaries mentioned above are stored in the `urnai/sc2/actions/sc2_actions.py`, and can
 be imported such as in the example below:
 
 ```python
-from urnai.sc2.actions.sc2_actions import raw_functions_classes as sc2_actions
+from urnai.sc2 import raw_functions_classes as sc2_actions
 ```
 
 ### Examples

urnai/sc2/__init__.py

@@ -0,0 +1,6 @@
+from urnai.sc2.actions import sc2_actions
+
+functions_classes = sc2_actions.functions_classes
+raw_functions_classes = sc2_actions.raw_functions_classes
+
+__all__ = ['functions_classes', 'raw_functions_classes']