Define the language suggest strings in the lang-suggest endpoints. (#693)

* Define the language strings in the language-suggest block.

* Move strings to REST API endpoint.

* Add a note that the plugins locale banner isn't actually used.

Author: dd32

mu-plugins/rest-api/endpoints/class-wporg-base-locale-banner-controller.php

@@ -63,4 +63,17 @@ public function send_plain_text( $result ) {
 
 		return null;
 	}
+
+	/**
+	 * The strings used within the Language Suggest endpoint.
+	 *
+	 * These are used by the wordpress.org/lang-suggest/ endpoint,
+	 * and are included here for translation purposes.
+	 */
+	private function _strings_for_glotpress() {
+		__( 'WordPress is also available in %s.', 'wporg' );
+		__( 'Learn WordPress is also available in %s.', 'wporg' );
+		__( 'WordPress support forums are also available in %s.', 'wporg' );
+	}
+
 }

mu-plugins/rest-api/endpoints/class-wporg-plugins-locale-banner-controller.php

@@ -7,6 +7,9 @@
 
 /**
  * Plugins_Locale_Banner_Controller
+ *
+ * NOTE: This is not used. Please see the below file.
+ * @see https://github.com/WordPress/wordpress.org/blob/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/api/routes/class-locale-banner.php
  */
 class Plugins_Locale_Banner_Controller extends Base_Locale_Banner_Controller {
 	/**