Add documentation for using Milkdown with various frameworks

- Created a new document for using components in Milkdown.
- Added a guide for using plugins in Milkdown, including toggling plugins programmatically and listing official plugins.
- Introduced a recipe for integrating Milkdown with Angular, including installation steps and component creation.
- Added a recipe for using Milkdown with Next.js, detailing installation and component setup.
- Created a guide for integrating Milkdown with NuxtJS, including installation and component creation.
- Added a comprehensive guide for using Milkdown with React, covering both Crepe and core Milkdown usage.
- Introduced a recipe for SolidJS integration with Milkdown, including installation and component creation.
- Added a guide for using Milkdown with Svelte, detailing installation and component setup.
- Created a comprehensive guide for integrating Milkdown with Vue, covering both Crepe and core Milkdown usage.
- Added a recipe for using Milkdown with Vue2, including installation and component creation.

milkdown-docs/recipes/angular.md

@@ -0,0 +1,48 @@
+# Angular
+
+We don't provide Angular support out of box, but you can use the vanilla version with it easily.
+
+## Install the Dependencies
+
+```bash
+# install with npm
+npm install @milkdown/kit
+npm install @milkdown/theme-nord
+```
+
+## Create a Component
+
+Create a component is pretty easy.
+
+```html
+<!-- editor.component.html -->
+<div #editorRef></div>
+```
+
+```typescript
+// editor.component.ts
+import { Component, ElementRef, ViewChild } from "@angular/core";
+import { defaultValueCtx, Editor, rootCtx } from "@milkdown/kit/core";
+import { commonmark } from "@milkdown/kit/preset/commonmark";
+import { nord } from "@milkdown/theme-nord";
+
+@Component({
+  templateUrl: "./editor.component.html",
+})
+export class AppComponent {
+  @ViewChild("editorRef") editorRef: ElementRef;
+
+  defaultValue = "# Milkdown x Angular";
+
+  ngAfterViewInit() {
+    Editor.make()
+      .config((ctx) => {
+        ctx.set(rootCtx, this.editorRef.nativeElement);
+        ctx.set(defaultValueCtx, this.defaultValue);
+      })
+      .config(nord)
+      .use(commonmark)
+      .create();
+  }
+}
+```