Add User to docs

Author: chillymosh

docs/references/user.rst

@@ -9,6 +9,11 @@ User Reference
 .. autoclass:: twitchio.PartialUser
     :members:
 
+.. attributetable:: twitchio.User
+
+.. autoclass:: twitchio.User
+    :members:
+
 .. attributetable:: twitchio.Chatter
 
 .. autoclass:: twitchio.Chatter

twitchio/user.py

@@ -3364,6 +3364,8 @@ async def warn_user(
 class User(PartialUser):
     """Represents a User.
 
+    This class inherits from PartialUser and contains additional information about the user.
+
     Attributes
     ----------
     id: str