feat: add vditor locally

public/vditor/ts/outline/index.d.ts

@@ -0,0 +1,7 @@
+/// <reference types="./types" />
+export declare class Outline {
+    element: HTMLElement;
+    constructor(outlineLabel: string);
+    render(vditor: IVditor): string;
+    toggle(vditor: IVditor, show?: boolean, focus?: boolean): void;
+}