add data source for packages

src/Umbraco.Web.UI.Client/src/backoffice/packages/repository/sources/package.server.data.ts

@@ -0,0 +1,22 @@
+import { UmbControllerHostInterface } from '@umbraco-cms/controller';
+import { tryExecuteAndNotify } from '@umbraco-cms/resources';
+import { umbracoPath } from '@umbraco-cms/utils';
+
+/**
+ * Data source for packages from the server
+ * @export
+ */
+export class UmbPackageServerDataSource {
+	constructor(private readonly host: UmbControllerHostInterface) {}
+
+	/**
+	 * Get the root items from the server
+	 * @memberof UmbPackageServerDataSource
+	 */
+	getRootItems() {
+		return tryExecuteAndNotify(
+			this.host,
+			fetch(umbracoPath('/manifests')).then((res) => res.json())
+		);
+	}
+}