feat(bot): add reaction event handling

Introduced a callback to handle reaction events in the bot. This enhancement improves user interaction by allowing the bot to respond to reactions, broadening its capability beyond basic message and member events. No impact on existing functionality.

src/matrix_applicationbot/classes/bot.py

@@ -12,6 +12,7 @@ from nio import (
     RoomMemberEvent,
     RoomKickResponse,
     RoomInviteResponse,
+    ReactionEvent,
 )
 
 import logging
@@ -52,6 +53,8 @@ class ApplicationBot:
         self.client.add_event_callback(self.message_callback, RoomMessageMedia)
         self.client.add_event_callback(self.invite_callback, InviteMemberEvent)
         self.client.add_event_callback(self.member_event_callback, RoomMemberEvent)
+        self.client.add_event_callback(self.reaction_callback, ReactionEvent)
+
         await self.client.sync_forever(timeout=30000)
 
     async def message_callback(self, room: MatrixRoom, event):
@@ -448,7 +451,10 @@ class ApplicationBot:
             await self.client.room_send(
                 room.room_id,
                 "m.room.message",
-                {"msgtype": "m.text", "body": f"Application #{ticket_id} does not exist."},
+                {
+                    "msgtype": "m.text",
+                    "body": f"Application #{ticket_id} does not exist.",
+                },
             )
 
     async def close_ticket(self, room, sender, command):