add support for supplying ltr and rtl

src/Umbraco.Web.UI.Client/src/libs/localization-api/registry/translation.registry.ts

@@ -39,7 +39,7 @@ export class UmbTranslationRegistry {
 							// Notify subscribers that the inner dictionary has changed.
 							const translation: Translation = {
 								$code: userCulture,
-								$dir: 'ltr',
+								$dir: extension.meta.direction ?? 'ltr',
 								...innerDictionary,
 							};
 							registerTranslation(translation);

src/Umbraco.Web.UI.Client/src/packages/core/extension-registry/models/translations.model.ts

@@ -12,6 +12,13 @@ export interface MetaTranslations {
 	 */
 	culture: string;
 
+	/**
+	 * The direction of the translations (left-to-right or right-to-left).
+	 * @example "ltr"
+	 * @default "ltr"
+	 */
+	direction?: 'ltr' | 'rtl';
+
 	/**
 	 * The translations.
 	 * @example