Added style class definitions to *Style.d.ts

components/lib/toolbar/style/ToolbarStyle.d.ts

@@ -1,3 +1,19 @@
+/**
+ *
+ * Toolbar is a grouping component for buttons and other content.
+ *
+ * [Live Demo](https://www.primevue.org/toolbar/)
+ *
+ * @module toolbarstyle
+ *
+ */
 import { BaseStyle } from '../../base/style';
 
+export enum ToolbarClasses {
+    root = 'p-toolbar',
+    start = 'p-toolbar-start',
+    center = 'p-toolbar-center',
+    end = 'p-toolbar-end'
+}
+
 export interface ToolbarStyle extends BaseStyle {}