Add initial resource view (#12180)

* add inital resource view

* fix strict compile

* hide resource viewer behind arc

* fix arc detection

* fix hygiene

* add disposable

* make the css more specific

src/sql/platform/resourceViewer/common/resourceViewerRegistry.ts

@@ -0,0 +1,41 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { Emitter, Event } from 'vs/base/common/event';
+import { Registry } from 'vs/platform/registry/common/platform';
+
+export const Extensions = {
+	ResourceViewerExtension: 'resourceViewer.resources'
+};
+
+export interface ResourceType {
+	readonly id: string;
+	readonly icon: string;
+	readonly name: string;
+}
+
+export interface ResourceViewerResourcesRegistry {
+	registerResource(resource: ResourceType): void;
+	readonly allResources: ReadonlyArray<ResourceType>;
+	readonly onDidRegisterResource: Event<void>;
+}
+
+const resourceViewerResourceRegistery = new class implements ResourceViewerResourcesRegistry {
+
+	private readonly resources: ResourceType[] = [];
+	private readonly _onDidRegisterResource = new Emitter<void>();
+	public readonly onDidRegisterResource = this._onDidRegisterResource.event;
+
+	public registerResource(resource: ResourceType): void {
+		this.resources.push(Object.assign({}, resource));
+		this._onDidRegisterResource.fire();
+	}
+
+	get allResources(): ReadonlyArray<ResourceType> {
+		return this.resources;
+	}
+};
+
+Registry.add(Extensions.ResourceViewerExtension, resourceViewerResourceRegistery);