feat: Comment resolving (#7115)

shared/editor/commands/addMark.ts

@@ -0,0 +1,20 @@
+import { Attrs, MarkType } from "prosemirror-model";
+import { Command } from "prosemirror-state";
+
+/**
+ * A prosemirror command to create a mark at the current selection.
+ *
+ * @returns A prosemirror command.
+ */
+export const addMark =
+  (type: MarkType, attrs?: Attrs | null): Command =>
+  (state, dispatch) => {
+    dispatch?.(
+      state.tr.addMark(
+        state.selection.from,
+        state.selection.to,
+        type.create(attrs)
+      )
+    );
+    return true;
+  };