feat: anchor links (#1765)

* feat: add heading extension with unique ID support and scroll functionality
* Added unique id for heading
* remove baseUrl heading storage
* move heading to extensions package
* WIP
* support anchors in mentions
* enhance scrolling functionality
* nodeId function
* fix nanoid import
* Bring unique-id extension local
* fixes
* fix internal link scroll in public pages
* add unique id server side
* rename mention anchor to anchorId
* capture first anchorId on paste

---------

Co-authored-by: Romik <40670677+RomikMakavana@users.noreply.github.com>

packages/editor-ext/src/lib/trailing-node.ts

@@ -64,6 +64,12 @@ export const TrailingNode = Extension.create<TrailingNodeExtensionOptions>({
               return value
             }
 
+            // Ignore transactions from UniqueID extension to prevent infinite loops
+            // when UniqueID adds IDs to newly inserted trailing nodes
+            if (tr.getMeta('__uniqueIDTransaction')) {
+              return value
+            }
+
             const lastNode = tr.doc.lastChild
             return !nodeEqualsType({ node: lastNode, types: disabledNodes })
           },