restructure the project for packaging

Dockerfile

@@ -0,0 +1,19 @@
+FROM python:3.12-slim
+
+WORKDIR /app
+
+# Copy only necessary files and directories
+COPY src/auracaster_webui/ ./src/auracaster_webui/
+COPY src/api_client/ ./src/api_client/
+
+# Install the package
+RUN pip install --no-cache-dir .
+
+# Expose Streamlit port
+EXPOSE 8501
+
+# Set environment variables
+ENV PYTHONUNBUFFERED=1
+
+# Run the Streamlit app
+CMD ["auracaster-webui"]