[feat] update some feature

sync code of  fastrtc,
add text support through datachannel,
fix safari connect problem
support chat without camera or mic

justfile

@@ -0,0 +1,58 @@
+# Upload a single demo space
+default:
+    @just --list
+
+upload path:
+    python upload_space.py demo/{{path}}
+
+# Upload all demo spaces
+upload-all:
+    python upload_space.py demo --all
+
+# Run a demo with uvicorn
+run name:
+    uvicorn demo.{{name}}.app:app --port 8000
+
+# Run the gradio ui for a demo
+gradio name:
+    MODE=UI python demo/{{name}}/app.py
+
+# Run a demo with phone mode
+phone name:
+    MODE=PHONE python demo/{{name}}/app.py
+
+call name:
+    MODE=PHONE python demo/{{name}}/app.py
+
+# Upload the latest wheel file to PyPI using twine
+publish:
+    #!/usr/bin/env python
+    import glob
+    import os
+    from pathlib import Path
+    
+    # Find all wheel files in dist directory
+    wheels = glob.glob('dist/*.whl')
+    if not wheels:
+        print("No wheel files found in dist directory")
+        exit(1)
+    
+    # Sort by creation time to get the latest
+    latest_wheel = max(wheels, key=os.path.getctime)
+    print(f"Uploading {latest_wheel}")
+    os.system(f"twine upload {latest_wheel}")
+
+
+# Build the package
+build:
+    gradio cc build --no-generate-docs
+
+# Format the code
+format:
+    ruff format .
+    ruff check --fix .
+    ruff check --select I --fix .
+    cd frontend && npx prettier --write . && cd ..
+
+docs:
+    mkdocs serve -a localhost:8081