docs: Added docs about onPlayer** events

docs/defaultEvents/player/onPlayerDisconnect.md

@@ -0,0 +1,18 @@
+# `event` onPlayerDisconnect
+This event is triggered when a player gets disconnected with the server.
+
+Original: [onPlayerDisconnect](https://gothicmultiplayerteam.gitlab.io/docs/0.3.0/script-reference/server-events/player/onPlayerDisconnect/)
+
+## Parameters
+* `dict` **kwargs**:
+    * `int` **playerid**: he id of the player who disconnected from the server.
+    * `int` **reason**: the reason why player got disconnected. For more information see **TBD**.
+    
+## Usage
+```python
+import g2o
+        
+@g2o.event('onPlayerDisconnect')
+def onChangeDC(**kwargs):
+    print(f'Player {kwargs['playerid']} has left from the server')
+```