add page for aur search

install aur package by button click

frontend/lib/providers/aur_search_provider.dart

@@ -0,0 +1,18 @@
+import 'package:aurcache/api/aur.dart';
+import 'package:aurcache/models/aur_package.dart';
+
+import '../api/API.dart';
+import 'BaseProvider.dart';
+
+class AurSearchDTO {
+  final String query;
+
+  AurSearchDTO({required this.query});
+}
+
+class AURSearchProvider extends BaseProvider<List<AurPackage>, AurSearchDTO> {
+  @override
+  loadFuture(context, {dto}) {
+    data = API.getAurPackages(dto!.query);
+  }
+}