Added in auto-install prompt for Azure CLI and arcdata extension, "Don't Ask Again" logic, removed waiting on azcli extension activate (#16646)

* Added back Don't Ask Again logic

* If no Azure CLI found, throw error instead of returning undefined.

* Deleted 'restart ADS' text for arcdata extension prompts

* Added error catch for parse version and parsed out the * in az --version

* Added back findAz()

* Added arcdata version to AzTool. Parse --version using regex.

* Return undefined if no az found.

* Added userRequested param for findAz

* No longer await on extension activate. Re-added some functions for az install.

* Install works for windows

* Changed auto install for az on Linux and MacOS.

* Added comment for findSpecificAzAndArc and uncommented some localizedConstants

* Added comment for getSemVersionArc and took out the path for some tests.

* Made findSpecificAzAndArc return an object instead of a list

* Removed azToolService test

* Removed azToolService tests and renamed suite to azcli Extension Tests

* Got rid of new Regexp for regex in parseVersions

* Added back azToolService.ts

* Added logic to enable prompt user to install arcdata extension and auto-install capability. No update capability yet.

Co-authored-by: Candice Ye <canye@microsoft.com>

extensions/azcli/src/azReleaseInfo.ts

@@ -0,0 +1,15 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+interface PlatformReleaseInfo {
+	version: string; // "20.0.1"
+	link?: string; // "https://aka.ms/az-msi"
+}
+
+export interface AzReleaseInfo {
+	win32: PlatformReleaseInfo,
+	darwin: PlatformReleaseInfo,
+	linux: PlatformReleaseInfo
+}