feat: support plugins

app.py

@@ -4,14 +4,17 @@ import config
 from channel import channel_factory
 from common.log import logger
 
-
+from plugins import *
 if __name__ == '__main__':
     try:
         # load config
         config.load_config()
 
         # create channel
-        channel = channel_factory.create_channel("wx")
+        channel_name='wx'
+        channel = channel_factory.create_channel(channel_name)
+        if channel_name=='wx':
+            PluginManager().load_plugins()
 
         # startup channel
         channel.startup()