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/utils.ts

@@ -5,6 +5,7 @@ import { CellSelection, TableMap } from "@tiptap/pm/tables";
 import { Node, ResolvedPos } from "@tiptap/pm/model";
 import Table from "@tiptap/extension-table";
 import { sanitizeUrl as braintreeSanitizeUrl } from "@braintree/sanitize-url";
+import { customAlphabet } from "nanoid";
 
 export const isRectSelected = (rect: any) => (selection: CellSelection) => {
   const map = TableMap.get(selection.$anchorCell.node(-1));
@@ -383,9 +384,12 @@ export function icon(name: string) {
 
 export function sanitizeUrl(url: string | undefined): string {
   if (!url) return "";
-  
+
   const sanitized = braintreeSanitizeUrl(url);
-  
+
   // Return empty string instead of "about:blank"
   return sanitized === "about:blank" ? "" : sanitized;
 }
+
+const alphabet = "abcdefghijklmnopqrstuvwxyz";
+export const generateNodeId = customAlphabet(alphabet, 12);