Move service installs to their extensions (#9778)

* move service installs to their extensions

* more clean up

* fix clearline

* remove some stuff

extensions/admin-tool-ext-win/build/postinstall.js

@@ -0,0 +1,43 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+(async () => {
+	const serviceDownloader = require('service-downloader').ServiceDownloadProvider;
+	const path = require('path');
+	const fs = require('fs').promises;
+	const rimraf = require('rimraf');
+	const assert = require('assert');
+	const readline = require('readline');
+
+	async function installService(configPath) {
+		const absoluteConfigPath = require.resolve('../config.json');
+		const config = require(absoluteConfigPath);
+		const runtime = 'Windows_64';
+		// fix path since it won't be correct
+		config.installDirectory = path.join(path.dirname(absoluteConfigPath), config.installDirectory);
+		let installer = new serviceDownloader(config);
+		installer.eventEmitter.onAny((event, ...values) => {
+			readline.cursorTo(process.stdout, 0);
+			readline.clearLine(process.stdout, 0);
+			process.stdout.write(`${event}${values && values.length > 0 ? ` - ${values.join(' ')}` : ''}`);
+		});
+		let serviceInstallFolder = installer.getInstallDirectory(runtime);
+		await new Promise((rs, rj) => rimraf(serviceInstallFolder, (e) => e ? rj(e) : rs()));
+		await installer.installService(runtime);
+		let stat;
+		for (const file of config.executableFiles) {
+			try {
+				stat = await fs.stat(path.join(serviceInstallFolder, file));
+			} catch (e) { }
+		}
+
+		assert(stat);
+	}
+
+	await installService();
+})().catch(e => {
+	console.error(e);
+	process.exit(1);
+});