[FEATURE] Local storage integration for self-hosted version

### 💡 Feature requested by u/warpio on reddit

> I would personally be very interested in this if it could pull info from just an offline documents folder, instead of needing your notes to be in emails or in a third-party service like GDocs.

### ✨ Describe the Solution  
Add an integration that allows a local folder to be connected to Sentient when it is in the self-hosted mode.