feat: ✨ Enhance development environment setup with Docker and VS Code integration

[elvus]

• Updated .devcontainer/devcontainer.json to include additional features and VS Code extensions for improved development experience.
• Added a new Dockerfile for building the development container with Node.js, pnpm, and essential tools.
• Introduced docker-compose.yml to manage application and PostgreSQL services, including health checks and environment variable configurations.
• Updated .gitignore to exclude .pnpm-store directory.