add new collaboration cursor plugin

packages/extension-collaboration-cursor/index.ts

@@ -0,0 +1,27 @@
+import { Extension } from '@tiptap/core'
+import { yCursorPlugin } from 'y-prosemirror'
+
+export interface CollaborationCursorOptions {
+  name: string,
+  color: string,
+  provider: any,
+}
+
+export default new Extension<CollaborationCursorOptions>()
+  .name('collaboration_cursor')
+  .defaults({
+    provider: null,
+    name: 'Someone',
+    color: '#cccccc',
+  })
+  .plugins(({ options }) => [
+    yCursorPlugin((() => {
+      options.provider.awareness.setLocalStateField('user', {
+        name: options.name,
+        color: options.color,
+      })
+
+      return options.provider.awareness
+    })()),
+  ])
+  .create()