CommonClient: allow worlds to change title of run_gui without rewriting it

CommonClient.py

@@ -662,17 +662,19 @@ def handle_connection_loss(self, msg: str) -> None:
         logger.exception(msg, exc_info=exc_info, extra={'compact_gui': True})
         self._messagebox_connection_loss = self.gui_error(msg, exc_info[1])
 
-    def run_gui(self):
-        """Import kivy UI system and start running it as self.ui_task."""
+    def make_gui(self) -> type:
+        """To return the Kivy App class needed for run_gui so it can be overridden before being built"""
         from kvui import GameManager
 
         class TextManager(GameManager):
-            logging_pairs = [
-                ("Client", "Archipelago")
-            ]
             base_title = "Archipelago Text Client"
 
-        self.ui = TextManager(self)
+        return TextManager
+
+    def run_gui(self):
+        """Import kivy UI system from make_gui() and start running it as self.ui_task."""
+        ui_class = self.make_gui()
+        self.ui = ui_class(self)
         self.ui_task = asyncio.create_task(self.ui.async_run(), name="UI")
 
     def run_cli(self):