Add support for team membership role

discord/enums.py

@@ -42,6 +42,7 @@ __all__ = (
     'ActivityType',
     'NotificationLevel',
     'TeamMembershipState',
+    'TeamMemberRole',
     'WebhookType',
     'ExpireBehaviour',
     'ExpireBehavior',
@@ -521,6 +522,13 @@ class TeamMembershipState(Enum):
     accepted = 2
 
 
+class TeamMemberRole(Enum):
+    owner = 'owner'
+    admin = 'admin'
+    developer = 'developer'
+    read_only = 'read_only'
+
+
 class WebhookType(Enum):
     incoming = 1
     channel_follower = 2