feat(web,server)!: runtime log level (#5672)

* feat: change log level at runtime

* chore: open api

* chore: prefer env over runtime

* chore: remove default env value

mobile/openapi/test/log_level_test.dart

@@ -0,0 +1,21 @@
+//
+// 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 LogLevel
+void main() {
+
+  group('test LogLevel', () {
+
+  });
+
+}