feat: Enhance provider components with detailed documentation and comments

- Added comprehensive comments and JSDoc-style documentation to NotificationProvider, ThemeProvider, UserProvider, and WebsiteThemeProvider for better clarity and maintainability.
- Improved type definitions in index.ts for better code understanding and usage.
- Introduced Docker support with Dockerfiles for various services including AI server, signaling server, and browser-use service.
- Created a docker-compose.yml file to orchestrate multiple services including PostgreSQL, AI, scraper, and frontend.
- Added a startup guide (startup.txt) for setting up the CRM environment on Ubuntu with Docker.
- Included a .dockerignore file to exclude unnecessary files from Docker builds.

ai-server/Dockerfile

@@ -0,0 +1,12 @@
+FROM node:20-slim
+RUN apt-get update && apt-get install -y --no-install-recommends postgresql-client && rm -rf /var/lib/apt/lists/*
+WORKDIR /app
+COPY package.json package-lock.json* ./
+RUN npm ci --omit=dev
+COPY ai-server/ ./ai-server/
+COPY splash.html ./
+COPY data/ ./data/
+COPY scripts/run-migrations.mjs ./scripts/run-migrations.mjs
+COPY database/ ./database/
+EXPOSE 3001
+CMD ["node", "ai-server/index.mjs"]