feat: footnotes (#2384)

* feat: footnotes

* feat: proper DOCX support

apps/client/src/features/editor/components/slash-menu/menu-items.ts

@@ -30,6 +30,7 @@ import {
   IconTag,
   IconMoodSmile,
   IconRotate2,
+  IconSuperscript,
 } from "@tabler/icons-react";
 import {
   CommandProps,
@@ -177,6 +178,16 @@ const CommandGroups: SlashMenuGroupedItemsType = {
       command: ({ editor, range }: CommandProps) =>
         editor.chain().focus().deleteRange(range).setPageBreak().run(),
     },
+    {
+      title: "Footnote",
+      description: "Insert a footnote reference.",
+      searchTerms: ["footnote", "reference", "citation", "note"],
+      icon: IconSuperscript,
+      command: ({ editor, range }: CommandProps) => {
+        editor.chain().focus().deleteRange(range).run();
+        editor.commands.addFootnote();
+      },
+    },
     {
       title: "Image",
       description: "Upload any image from your device.",