Kusto extension for ADS (#11752)

* Kusto extension

* Add kusto to extensions.ts

* Remove objectExplorerNodeProvider

* Removed some BDC items + CR cleanup

* Cleanup unused strings in package.nls.json

* Remove unused svgs, and some cleanup

* Bringing objectExplorerNode back and hygiene changes

* rename to KustoObjectExplorerNodeProvider

* rename to KustoIconProvider

* Cleanup SQL code

* Fix compilation error

* Clean up in objectExplorerNodeProvider folder

* Some more clean up based on comments

* apiWrapper add

* changed to camelCase

* Remove unused functions/files

* Removed AgentServicesFeature

* dacfx, cms, schemacompare clean up

* Clean up and addressed few comments

* Remove apWrapper from kusto extension

* Addressed few comments

* credentialstore and escapeexception changes

* Added strict check for Kusto extension

* Fix error and addressed comment

* Saving Kusto files shoulf default to .kql

* package.json changes

* Fix objectExplorerNodeProvider

* Amir/kusto fix (#11972)

* Add the compiled extensions.js

* Fix strict compile rules

Co-authored-by: Monica Gupta <mogupt@microsoft.com>
Co-authored-by: Amir Omidi <amomidi@microsoft.com>

extensions/kusto/src/prompts/checkbox.ts

@@ -0,0 +1,52 @@
+'use strict';
+
+// This code is originally from https://github.com/DonJayamanne/bowerVSCode
+// License: https://github.com/DonJayamanne/bowerVSCode/blob/master/LICENSE
+
+import { window } from 'vscode';
+import Prompt from './prompt';
+import EscapeException from './escapeException';
+
+const figures = require('figures');
+
+export default class CheckboxPrompt extends Prompt {
+
+	constructor(question: any, ignoreFocusOut?: boolean) {
+		super(question, ignoreFocusOut);
+	}
+
+	public render(): any {
+		let choices = this._question.choices.reduce((result, choice) => {
+			let choiceName = choice.name || choice;
+			result[`${choice.checked === true ? figures.radioOn : figures.radioOff} ${choiceName}`] = choice;
+			return result;
+		}, {});
+
+		let options = this.defaultQuickPickOptions;
+		options.placeHolder = this._question.message;
+
+		let quickPickOptions = Object.keys(choices);
+		quickPickOptions.push(figures.tick);
+
+		return window.showQuickPick(quickPickOptions, options)
+			.then(result => {
+				if (result === undefined) {
+					throw new EscapeException();
+				}
+
+				if (result !== figures.tick) {
+					choices[result].checked = !choices[result].checked;
+
+					return this.render();
+				}
+
+				return this._question.choices.reduce((result2, choice) => {
+					if (choice.checked === true) {
+						result2.push(choice.value);
+					}
+
+					return result2;
+				}, []);
+			});
+	}
+}