refactor(mobile): log service (#16383)

refactor: log service

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>

mobile/lib/domain/models/log.model.dart

@@ -0,0 +1,69 @@
+// ignore_for_file: constant_identifier_names
+
+import 'package:logging/logging.dart';
+
+/// Log levels according to dart logging [Level]
+enum LogLevel {
+  ALL,
+  FINEST,
+  FINER,
+  FINE,
+  CONFIG,
+  INFO,
+  WARNING,
+  SEVERE,
+  SHOUT,
+  OFF,
+}
+
+class LogMessage {
+  final String message;
+  final LogLevel level;
+  final DateTime createdAt;
+  final String? logger;
+  final String? error;
+  final String? stack;
+
+  const LogMessage({
+    required this.message,
+    required this.level,
+    required this.createdAt,
+    this.logger,
+    this.error,
+    this.stack,
+  });
+
+  @override
+  bool operator ==(covariant LogMessage other) {
+    if (identical(this, other)) return true;
+
+    return other.message == message &&
+        other.level == level &&
+        other.createdAt == createdAt &&
+        other.logger == logger &&
+        other.error == error &&
+        other.stack == stack;
+  }
+
+  @override
+  int get hashCode {
+    return message.hashCode ^
+        level.hashCode ^
+        createdAt.hashCode ^
+        logger.hashCode ^
+        error.hashCode ^
+        stack.hashCode;
+  }
+
+  @override
+  String toString() {
+    return '''LogMessage: {
+message: $message,
+level: $level,
+createdAt: $createdAt,
+logger: ${logger ?? '<NA>'},
+error: ${error ?? '<NA>'},
+stack: ${stack ?? '<NA>'},
+}''';
+  }
+}