Add real MIAA connection string values (#10838)

* Add real MIAA connection string values

* Add MiaaModel and fix some strings

* Remove unused var

* Test to print env vars

* Add tests

* fixes

extensions/arc/src/models/miaaModel.ts

@@ -0,0 +1,28 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as azdata from 'azdata';
+import * as vscode from 'vscode';
+
+export class MiaaModel {
+	private readonly _onPasswordUpdated = new vscode.EventEmitter<string>();
+	public onPasswordUpdated = this._onPasswordUpdated.event;
+	public passwordLastUpdated?: Date;
+
+	constructor(public connectionProfile: azdata.IConnectionProfile, private _name: string) {
+	}
+
+	/** Returns the service's name */
+	public get name(): string {
+		return this._name;
+	}
+
+
+	/** Refreshes the model */
+	public async refresh() {
+		await Promise.all([
+		]);
+	}
+}