modelview dashboard (#9784)

* modelview dashboard

* styles

* toolbar support

* spaces

* add tab icon support

src/sql/azdata.proposed.d.ts

@@ -225,6 +225,7 @@ declare module 'azdata' {
 	 */
 	export interface TabbedPanelLayout {
 		orientation: TabOrientation;
+		showIcon: boolean;
 	}
 
 	/**
@@ -245,6 +246,11 @@ declare module 'azdata' {
 		 * Id of the tab
 		 */
 		id: string;
+
+		/**
+		 * Icon of the tab
+		 */
+		icon?: string | vscode.Uri | { light: string | vscode.Uri; dark: string | vscode.Uri };
 	}
 
 	/**
@@ -287,5 +293,33 @@ declare module 'azdata' {
 		 */
 		export const onDidChangeActiveNotebookEditor: vscode.Event<NotebookEditor>;
 	}
+
+	export namespace window {
+		export interface ModelViewDashboard {
+			registerTabs(handler: (view: ModelView) => Thenable<(DashboardTab | DashboardTabGroup)[]>): void;
+			open(): Thenable<void>;
+		}
+
+		export function createModelViewDashboard(title: string): ModelViewDashboard;
+	}
+
+	export interface DashboardTab extends Tab {
+		/**
+		 * Toolbar of the tab, optional.
+		 */
+		toolbar?: ToolbarContainer;
+	}
+
+	export interface DashboardTabGroup {
+		/**
+		 * * Title of the tab group
+		 */
+		title: string;
+
+		/**
+		 * children of the tab group
+		 */
+		tabs: DashboardTab[];
+	}
 }