* chore: rename utils.ts to fileoperations.ts
* feat: replace node-pty with E2B sandboxes
* added debounced function in the editor
* fix: move socket connection to useRef
* fix: wait until terminals are killed to close the container
* fix: ensure container remains open until all owner connections are closed
* fix: sync files to container instead of local file system
* fix: set project file permissions so that they belong to the terminal user
* fix: use the container URL for the preview panel
* fix: count only the current user's sandboxes towards the limit
* fix: remove hardcoded reference to localhost
* fix: add error handling to the backend
* docs: add information about E2B
---------
Co-authored-by: Akhilesh Rangani <akhileshrangani4@gmail.com>