feat(web/server): webp thumbnail size configurable (#3598)

* feat(server/web): webp thumbnail size configurable

* update api

* add ui and fix test

* lint

* setting for jpeg size

* feat: coerce to number

* api

* jpeg resolution

---------

Co-authored-by: Jason Rasmussen <jrasm91@gmail.com>

mobile/openapi/test/system_config_thumbnail_dto_test.dart

@@ -0,0 +1,32 @@
+//
+// AUTO-GENERATED FILE, DO NOT MODIFY!
+//
+// @dart=2.12
+
+// ignore_for_file: unused_element, unused_import
+// ignore_for_file: always_put_required_named_parameters_first
+// ignore_for_file: constant_identifier_names
+// ignore_for_file: lines_longer_than_80_chars
+
+import 'package:openapi/api.dart';
+import 'package:test/test.dart';
+
+// tests for SystemConfigThumbnailDto
+void main() {
+  // final instance = SystemConfigThumbnailDto();
+
+  group('test SystemConfigThumbnailDto', () {
+    // int jpegSize
+    test('to test the property `jpegSize`', () async {
+      // TODO
+    });
+
+    // int webpSize
+    test('to test the property `webpSize`', () async {
+      // TODO
+    });
+
+
+  });
+
+}