feat: internal page links and mentions (#604)

* Work on mentions

* fix: properly parse page slug

* fix editor suggestion bugs

* mentions must start with whitespace

* add icon to page mention render

* feat: backlinks - WIP

* UI - WIP

* permissions check
* use FTS for page suggestion

* cleanup

* WIP

* page title fallback

* feat: handle internal link paste

* link styling

* WIP

* Switch back to LIKE operator for search suggestion

* WIP
* scope to workspaceId
* still create link for pages not found

* select necessary columns

* cleanups

package.json

@@ -23,7 +23,7 @@
     "@hocuspocus/transformer": "^2.14.0",
     "@joplin/turndown": "^4.0.74",
     "@joplin/turndown-plugin-gfm": "^1.0.56",
-    "@sindresorhus/slugify": "^2.2.1",
+    "@sindresorhus/slugify": "1.1.0",
     "@tiptap/core": "^2.10.3",
     "@tiptap/extension-code-block": "^2.10.3",
     "@tiptap/extension-code-block-lowlight": "^2.10.3",