Switch most remaining extensions to use esbuild

Just 3 left:

- git and github. These are doing weird stuff with d.ts imports and const enums

- github-authentication  which has some tricky path mapping stuff

extensions/microsoft-authentication/esbuild.mts

@@ -0,0 +1,67 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+import * as fs from 'node:fs';
+import * as path from 'node:path';
+import { run } from '../esbuild-extension-common.mts';
+
+const srcDir = path.join(import.meta.dirname, 'src');
+const outDir = path.join(import.meta.dirname, 'dist');
+
+const isWindows = process.platform === 'win32';
+const isMacOS = process.platform === 'darwin';
+const isLinux = !isWindows && !isMacOS;
+
+const windowsArches = ['x64'];
+const linuxArches = ['x64'];
+
+let platformFolder: string;
+switch (process.platform) {
+	case 'win32': platformFolder = 'windows'; break;
+	case 'darwin': platformFolder = 'macos'; break;
+	case 'linux': platformFolder = 'linux'; break;
+	default: platformFolder = '';
+}
+
+const arch = process.env.VSCODE_ARCH || process.arch;
+
+/**
+ * Copy native MSAL runtime binaries to the output directory.
+ */
+async function copyNativeMsalFiles(outDir: string): Promise<void> {
+	if (
+		!(isWindows && windowsArches.includes(arch)) &&
+		!isMacOS &&
+		!(isLinux && linuxArches.includes(arch))
+	) {
+		return;
+	}
+
+	const msalRuntimeDir = path.join(import.meta.dirname, 'node_modules', '@azure', 'msal-node-runtime', 'dist', platformFolder, arch);
+	try {
+		const files = await fs.promises.readdir(msalRuntimeDir);
+		for (const file of files) {
+			if (/^(lib)?msal.*\.(node|dll|dylib|so)$/.test(file)) {
+				await fs.promises.copyFile(path.join(msalRuntimeDir, file), path.join(outDir, file));
+			}
+		}
+	} catch {
+		// Skip if directory doesn't exist (unsupported platform/arch)
+	}
+}
+
+run({
+	platform: 'node',
+	entryPoints: {
+		'extension': path.join(srcDir, 'extension.ts'),
+	},
+	srcDir,
+	outdir: outDir,
+	additionalOptions: {
+		external: ['vscode', './msal-node-runtime'],
+		alias: {
+			'keytar': path.resolve(import.meta.dirname, 'packageMocks', 'keytar', 'index.js'),
+		},
+	},
+}, process.argv, copyNativeMsalFiles);