Navigation: Expose new props to extend Page/PluginPage (#58465)

* add extensions and customisation to `Page`

* adjust alignment

packages/grafana-runtime/src/components/PluginPage.tsx

@@ -2,7 +2,18 @@ import React from 'react';
 
 import { NavModelItem, PageLayoutType } from '@grafana/data';
 
+export interface PageInfoItem {
+  label: string;
+  value: React.ReactNode;
+}
+
 export interface PluginPageProps {
+  /** Can be used to place actions inline with the heading */
+  info?: PageInfoItem[];
+  /** Can be used to place actions inline with the heading */
+  actions?: React.ReactNode;
+  /** Can be used to customize rendering of title */
+  renderTitle?: (title: string) => React.ReactNode;
   /** Shown under main heading */
   subTitle?: React.ReactNode;
   pageNav?: NavModelItem;