feat(docker): add Docker deployment configuration and API server

Add Docker deployment setup with FastAPI server implementation for Crawl4AI:
- Create Dockerfile with Python 3.10 and Playwright dependencies
- Implement FastAPI server with streaming and non-streaming endpoints
- Add request/response models and JSON serialization
- Include test script for API verification

Also includes:
- Update .gitignore for Continue development files
- Add project rules in .continuerules
- Clean up async_dispatcher.py formatting

deploy/docker/Dockerfile

@@ -0,0 +1,18 @@
+FROM python:3.10-slim
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    wget \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Playwright dependencies
+RUN playwright install --with-deps chromium
+
+WORKDIR /app
+COPY requirements.txt .
+RUN pip install -r requirements.txt
+
+COPY . .
+
+CMD ["uvicorn", "server:app", "--host", "0.0.0.0", "--port", "8000"]