Add SlotFill in Status & Availability panel to match existing hook

edit-post/README.md

@@ -90,3 +90,32 @@ The [Dashicon](https://developer.wordpress.org/resource/dashicons/) icon slug st
 - Required: No
 
 
+## SlotFills
+SlotFills provide plugin or theme authors the ability to add items into the Gutenberg interface. While these slots appear in certain locations, 
+it should be noted that they are named and implemented around the function they serve and not their current location, which may change in future iterations.
+
+### PluginPostStatusInfo
+
+_Example_
+```jsx
+var el = wp.element.createElement;
+var __ = wp.i18n.__;
+var registerPlugin = wp.plugins.registerPlugin;
+var PluginPostStatusInfo = wp.editPost.PluginPostStatusInfo;
+
+function MyPlugin() {
+	return (
+		el(
+			PluginPostStatusInfo,
+			{},
+			__( 'My post status info' )
+		)
+	);
+};
+
+registerPlugin( 'my-plugin', {
+	render: MyPlugin,
+} )
+```
+
+

edit-post/components/sidebar/plugin-post-status-info/index.js

@@ -0,0 +1,13 @@
+/**
+ * Defines as extensibility slot for the Status & Visibility panel
+ */
+import { createSlotFill, PanelRow } from '@wordpress/components';
+
+export const { Fill: PluginPostStatusInfo, Slot } = createSlotFill( 'PluginPostStatusInfo' );
+
+PluginPostStatusInfo.Slot = () => (
+	<PanelRow>
+		<Slot />
+	</PanelRow>
+);
+export default PluginPostStatusInfo;

edit-post/components/sidebar/post-status/index.js

@@ -17,6 +17,7 @@ import PostSticky from '../post-sticky';
 import PostAuthor from '../post-author';
 import PostFormat from '../post-format';
 import PostPendingStatus from '../post-pending-status';
+import PluginPostStatusInfo from '../plugin-post-status-info';
 
 /**
  * Module Constants
@@ -32,6 +33,7 @@ function PostStatus( { isOpened, onTogglePanel } ) {
 			<PostSticky />
 			<PostPendingStatus />
 			<PostAuthor />
+			<PluginPostStatusInfo.Slot />
 			<PostTrash />
 		</PanelBody>
 	);

edit-post/index.js

@@ -104,5 +104,6 @@ export function initializeEditor( id, post, settings ) {
 	} );
 }
 
+export { default as PluginPostStatusInfo } from './components/sidebar/plugin-post-status-info';
 export { default as PluginSidebar } from './components/sidebar/plugin-sidebar';
 export { default as PluginSidebarMoreMenuItem } from './components/header/plugin-sidebar-more-menu-item';