Migrate to using docusaurus, rather than docsify for documentation (#603)

* Add docusaurus documentation (to replace the docsify setup
* Remove older docs
* Specify documentation as the gh pages build action working directory

documentation/docs/miscellaneous/telemetry.md

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+---
+sidebar_position: 1
+---
+
+# Telemetry
+
+We collect some high level, anonymized metadata about usage of Khoj. This includes:
+- Client (Web, Emacs, Obsidian)
+- API usage (Search, Chat)
+- Configured content types (Github, Org, etc)
+- Request metadata (e.g., host, referrer)
+
+We don't send any personal information or any information from/about your content. We only send the above metadata. This helps us prioritize feature development and understand how people are using Khoj. Don't just take our word for it -- you can see [the code here](https://github.com/khoj-ai/khoj/tree/master/src/telemetry).
+
+## Disable Telemetry
+
+You can opt out of telemetry at any time. To do so,
+1. Open `~/.khoj/khoj.yml`
+2. Set `should-log-telemetry` to `false`
+3. Save the file and restart Khoj
+
+If you have any questions or concerns, please reach out to us on [Discord](https://discord.gg/BDgyabRM6e).