make temperature adjustable per cmd

matrix_pygmalion_bot/core.py

@@ -155,6 +155,8 @@ class Callbacks(object):
             else:
                 self.bot.negative_prompt = None
             return
+        elif event.body.startswith('!temperature'):
+            self.bot.temperature = float( event.body.removeprefix('!temperature').strip()
         elif event.body.startswith('!begin'):
             self.bot.chat_history.room(room.display_name).clear()
             self.bot.room_config[room.room_id]["tick"] = 0