Update doc

docs/source/api.rst

@@ -6,4 +6,5 @@ This is the front page for the API documentation of the **pydualsense** library.
 
 .. toctree::
     ds_enum
-    ds_main
+    ds_main
+    ds_eventsystem

docs/source/ds_eventsystem.rst

@@ -0,0 +1,10 @@
+pydualsense event system classes
+=========================
+
+The `Event System` implements the event system used for the button callbacks
+
+.. automodule:: pydualsense.event_system
+   :noindex:
+   :members:
+   :undoc-members:
+   :show-inheritance:

docs/source/index.rst

@@ -17,6 +17,7 @@ Contents
    usage
    api
    examples
+   modules
 
 
 TODOs