feat: Add LMArenaBeta provider and update existing providers

- Introduced a new provider class `LMArenaBeta` in `g4f/Provider/LMArenaBeta.py` with capabilities for text and image models.
- Updated `g4f/Provider/Cloudflare.py` to remove an unused import of `Cookies`.
- Modified `g4f/Provider/PollinationsAI.py` to change the condition for checking the action in the `next` command.
- Added a new provider `PuterJS` in `g4f/Provider/PuterJS.py` with various model handling and authentication logic.
- Removed the old `PuterJS` implementation from `g4f/Provider/not_working/PuterJS.py`.
- Updated `g4f/Provider/__init__.py` to include the new `LMArenaBeta` and `PuterJS` providers.
- Changed the label of `HarProvider` in `g4f/Provider/har/__init__.py` to "LMArena (Har)".
- Adjusted the model list in `g4f/Provider/openai/models.py` to ensure consistency in model definitions.
- Updated the API response handling in `g4f/providers/response.py` to calculate total tokens in the `Usage` class constructor.

g4f/gui/server/api.py

@@ -46,10 +46,10 @@ class Api:
                 "label": model.split(":")[-1] if provider.__name__ == "AnyProvider" else model,
                 "default": model == provider.default_model,
                 "vision": model in provider.vision_models,
-                "audio": model in provider.audio_models,
+                "audio": False if provider.audio_models is None else model in provider.audio_models,
                 "video": model in provider.video_models,
                 "image": model in provider.image_models,
-                "count": provider.models_count.get(model),
+                "count": False if provider.models_count is None else provider.models_count.get(model),
             }
         if provider in Provider.__map__:
             provider = Provider.__map__[provider]