Add support for role subscription reading

discord/flags.py

@@ -290,6 +290,24 @@ class SystemChannelFlags(BaseFlags):
         """
         return 8
 
+    @flag_value
+    def role_subscription_purchase_notifications(self):
+        """:class:`bool`: Returns ``True`` if role subscription purchase and renewal
+        notifications are enabled.
+
+        .. versionadded:: 2.2
+        """
+        return 16
+
+    @flag_value
+    def role_subscription_purchase_notification_replies(self):
+        """:class:`bool`: Returns ``True`` if the role subscription notifications
+        have a sticker reply button.
+
+        .. versionadded:: 2.2
+        """
+        return 32
+
 
 @fill_with_flags()
 class MessageFlags(BaseFlags):