- Added new functionality to resolve external URLs for files on Google Drive and Microsoft OneDrive mounts.
- Introduced `mount_cloud_service.go` to handle OAuth token extraction and URL resolution.
- Enhanced `mounts_service.go` to update mount configurations with OAuth tokens.
- Updated API routes to include a new endpoint for fetching external URLs.
- Implemented enrichment functions in `cloud_native.go` to mark files that should open in the provider's web editor.
- Added tests for cloud-native file enrichment in `cloud_native_test.go` to ensure correct behavior.
