add Commands interface

packages/core/src/commands/enter.ts

@@ -1,8 +1,14 @@
-import { Command } from '../types'
+import { Command, Commands } from '../types'
 
 /**
  * Trigger enter.
  */
-export const enter = (): Command => ({ commands }) => {
+export const enter: Commands['enter'] = () => ({ commands }) => {
   return commands.keyboardShortcut('Enter')
 }
+
+declare module '@tiptap/core' {
+  interface Commands {
+    enter: () => Command,
+  }
+}