Add a proxy server support for Chrome

gui.py

@@ -493,6 +493,8 @@ class LoginForm:
                 options.add_argument("--no-sandbox")
                 options.add_argument("--test-type")
                 options.add_argument("--disable-gpu")
+                if self._manager._twitch.settings.proxy:
+                    options.add_argument(f"--proxy-server={self._manager._twitch.settings.proxy}")
                 options.set_capability("pageLoadStrategy", "eager")
                 try:
                     driver_coro = loop.run_in_executor(