Remove dacfx and schema compare from the azdata api (#6684)

* refactor mssql extension to directly expose dacfx and schema compare

* remove more code

* fix compile errors

extensions/mssql/src/mssqlApiFactory.ts

@@ -0,0 +1,32 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { AppContext } from './appContext';
+import { mssql, ICmsService, IDacFxService, ISchemaCompareService, MssqlObjectExplorerBrowser } from './mssql';
+import * as constants from './constants';
+import { MssqlObjectExplorerNodeProvider } from './objectExplorerNodeProvider/objectExplorerNodeProvider';
+import * as azdata from 'azdata';
+
+export function createMssqlApi(context: AppContext): mssql {
+	return {
+		get cmsService() {
+			return context.getService<ICmsService>(constants.CmsService);
+		},
+		get dacFx() {
+			return context.getService<IDacFxService>(constants.DacFxService);
+		},
+		get schemaCompare() {
+			return context.getService<ISchemaCompareService>(constants.SchemaCompareService);
+		},
+		getMssqlObjectExplorerBrowser(): MssqlObjectExplorerBrowser {
+			return {
+				getNode: (explorerContext: azdata.ObjectExplorerContext) => {
+					let oeProvider = context.getService<MssqlObjectExplorerNodeProvider>(constants.ObjectExplorerService);
+					return <any>oeProvider.findSqlClusterNodeByContext(explorerContext);
+				}
+			};
+		},
+	};
+}