Add WebGPU Shading Language tokenizer, with tests

Fixes: microsoft#3883

src/basic-languages/monaco.contribution.ts

@@ -79,5 +79,6 @@ import './tcl/tcl.contribution';
 import './twig/twig.contribution';
 import './typescript/typescript.contribution';
 import './vb/vb.contribution';
+import './wgsl/wgsl.contribution';
 import './xml/xml.contribution';
 import './yaml/yaml.contribution';

src/basic-languages/wgsl/wgsl.contribution.ts

@@ -0,0 +1,24 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Google LLC. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { registerLanguage } from '../_.contribution';
+
+declare var AMD: any;
+declare var require: any;
+
+registerLanguage({
+	id: 'wgsl',
+	extensions: ['.wgsl'],
+	aliases: ['WebGPU Shading Language', 'WGSL', 'wgsl'],
+	loader: () => {
+		if (AMD) {
+			return new Promise((resolve, reject) => {
+				require(['vs/basic-languages/wgsl/wgsl'], resolve, reject);
+			});
+		} else {
+			return import('./wgsl');
+		}
+	}
+});