Add command to navigate to site editor (WordPress#66722)

* Add command to navigate to site editor

* No icon, improved label

* Modified code to display command other than Site editor

* Feedback and suggestion updates

---------

Co-authored-by: benazeer-ben <benazeer@git.wordpress.org>
Co-authored-by: richtabor <richtabor@git.wordpress.org>
Co-authored-by: t-hamano <wildworks@git.wordpress.org>
Co-authored-by: annezazu <annezazu@git.wordpress.org>
Co-authored-by: jameskoster <jameskoster@git.wordpress.org>
Co-authored-by: jasmussen <joen@git.wordpress.org>
Co-authored-by: ramonjd <ramonopoly@git.wordpress.org>

packages/editor/src/components/commands/index.js

@@ -25,6 +25,7 @@ import { store as noticesStore } from '@wordpress/notices';
 import { store as blockEditorStore } from '@wordpress/block-editor';
 import { store as coreStore, useEntityRecord } from '@wordpress/core-data';
 import { store as interfaceStore } from '@wordpress/interface';
+import { getPath } from '@wordpress/url';
 import { decodeEntities } from '@wordpress/html-entities';
 
 /**
@@ -90,6 +91,19 @@ const getEditorCommandLoader = () =>
 		const { openModal, enableComplementaryArea, disableComplementaryArea } =
 			useDispatch( interfaceStore );
 		const { getCurrentPostId } = useSelect( editorStore );
+		const { isBlockBasedTheme, canCreateTemplate } = useSelect(
+			( select ) => {
+				return {
+					isBlockBasedTheme:
+						select( coreStore ).getCurrentTheme()?.is_block_theme,
+					canCreateTemplate: select( coreStore ).canUser( 'create', {
+						kind: 'postType',
+						name: 'wp_template',
+					} ),
+				};
+			},
+			[]
+		);
 		const allowSwitchEditorMode =
 			isCodeEditingEnabled && isRichEditingEnabled;
 
@@ -271,6 +285,21 @@ const getEditorCommandLoader = () =>
 				},
 			} );
 		}
+		if ( canCreateTemplate && isBlockBasedTheme ) {
+			const isSiteEditor = getPath( window.location.href )?.includes(
+				'site-editor.php'
+			);
+			if ( ! isSiteEditor ) {
+				commands.push( {
+					name: 'core/go-to-site-editor',
+					label: __( 'Open Site Editor' ),
+					callback: ( { close } ) => {
+						close();
+						document.location = 'site-editor.php';
+					},
+				} );
+			}
+		}
 
 		return {
 			commands,