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.

completions-sample-code/vscode-node/lib/src/language/test/generatedLanguages.test.ts

@@ -0,0 +1,26 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { knownLanguages } from '../generatedLanguages';
+import { languageMarkers } from '../../../../prompt/src/languageMarker';
+import * as assert from 'assert';
+
+suite('generated languages', function () {
+	// tex exists as latex and tex in language markers
+	// jsx exists as jsx and javascriptreact in language markers. However jsx is never detected according to telemetry data
+	// vue-html will be detected as html
+	const ignoredMappings = ['jsx', 'tex', 'vue-html'];
+
+	for (const marker in languageMarkers) {
+		if (!ignoredMappings.includes(marker)) {
+			test(`'${marker}' is generated`, function () {
+				assert.ok(
+					marker in knownLanguages,
+					'language for comment marker ' + marker + ' has not been generated'
+				);
+			});
+		}
+	}
+});