feat(docs): add documentation site and demo features

- Introduced a new documentation site for Cursor BYOK using Next.js and Fumadocs.
- Added a product demo page with a corresponding Vite configuration.
- Implemented a demo API to simulate LLM calls and responses.
- Enhanced the Makefile to include new build and development commands for the documentation.
- Updated package.json scripts for building and running the documentation site.
- Created various components and layouts for the documentation structure, including blog and user documentation sections.
- Added styling for the new components and layouts to ensure a cohesive design.
- Included a README and other necessary files for local development and deployment.

apps/desktop/tsconfig.node.json

@@ -8,5 +8,5 @@
     "allowImportingTsExtensions": true,
     "types": ["node"]
   },
-  "include": ["vite.config.ts", "plugins/**/*.ts"]
+  "include": ["vite*.config.ts", "plugins/**/*.ts"]
 }