Initial commit of Database Projects extension (#8540)

* Initial commit of Database Projects extension

* Removing unused references, correcting license, tabs -> spaces in package.json

* cleaning up linter errors

extensions/sql-database-projects/src/controllers/mainController.ts

@@ -0,0 +1,38 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as vscode from 'vscode';
+
+/**
+ * The main controller class that initializes the extension
+ */
+export default class MainController implements vscode.Disposable {
+	protected _context: vscode.ExtensionContext;
+
+	public constructor(context: vscode.ExtensionContext) {
+		this._context = context;
+	}
+
+	public get extensionContext(): vscode.ExtensionContext {
+		return this._context;
+	}
+
+	public deactivate(): void {
+	}
+
+	public activate(): Promise<boolean> {
+		this.initializeDatabaseProjects();
+		return Promise.resolve(true);
+	}
+
+	private initializeDatabaseProjects(): void {
+		vscode.commands.registerCommand('sqlDatabaseProjects.new', () => { console.log('new database project called'); });
+		vscode.commands.registerCommand('sqlDatabaseProjects.open', () => { console.log('open database project called'); });
+	}
+
+	public dispose(): void {
+		this.deactivate();
+	}
+}