feature/faculty-filter (#1168)

uni/lib/view/common_widgets/faculty_filter.dart

@@ -0,0 +1,27 @@
+import 'package:flutter/material.dart';
+import 'package:uni/controller/local_storage/preferences_controller.dart';
+
+class FacultyFilter extends StatelessWidget {
+  const FacultyFilter({
+    required this.faculties,
+    required this.builder,
+    super.key,
+  });
+
+  final List<String> faculties;
+  final Widget Function(BuildContext context, List<String> authorizedFaculties)
+      builder;
+
+  @override
+  Widget build(BuildContext context) {
+    final authorizedFaculties = PreferencesController.getUserFaculties()
+        .where(
+          faculties.contains,
+        )
+        .toList();
+
+    return authorizedFaculties.isNotEmpty
+        ? builder(context, authorizedFaculties)
+        : Container();
+  }
+}