Initial Code Layering (#3788)

* working on formatting

* fixed basic lint errors; starting moving things to their appropriate location

* formatting

* update tslint to match the version of vscode we have

* remove unused code

* work in progress fixing layering

* formatting

* moved connection management service to platform

* formatting

* add missing file

* moving more servies

* formatting

* moving more services

* formatting

* wip

* moving more services

* formatting

* revert back tslint rules

* move css file

* add missing svgs

src/sql/platform/errorMessage/common/errorMessageService.ts

@@ -0,0 +1,16 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+import Severity from 'vs/base/common/severity';
+import { IAction } from 'vs/base/common/actions';
+import { createDecorator } from 'vs/platform/instantiation/common/instantiation';
+
+export const IErrorMessageService = createDecorator<IErrorMessageService>('errorMessageService');
+export interface IErrorMessageService {
+	_serviceBrand: any;
+	showDialog(severity: Severity, headerTitle: string, message: string, messageDetails?: string, actions?: IAction[]): void;
+}