Add event_channel_joined event to client and websocket.

Author: EvieePy

twitchio/client.py

@@ -915,3 +915,14 @@ async def event_raw_data(data):
                 print(data)
         """
         pass
+
+    async def event_channel_joined(self, channel: Channel):
+        """|coro|
+
+        Event called when the bot joins a channel.
+
+        Parameters
+        ----------
+        channel: :class:`.Channel`
+            The channel that was joined.
+        """

twitchio/websocket.py

@@ -469,6 +469,9 @@ async def _join(self, parsed):
         channel = Channel(name=channel, websocket=self)
         user = Chatter(name=parsed["user"], bot=self._client, websocket=self, channel=channel, tags=parsed["badges"])
 
+        if user.name == self._client.nick:
+            self.dispatch('channel_joined', channel)
+
         self.dispatch("join", channel, user)
 
     def _cache_add(self, parsed: dict):