add error helper class

src/helpers/error/handler/index.ts

@@ -0,0 +1,13 @@
+export class AppError extends Error {
+  public readonly statusCode: number;
+  public readonly details?: any;
+
+  constructor(statusCode = 400, message: string, details?: any) {
+    super(message);
+    this.name = "AppError";
+    this.statusCode = statusCode;
+    this.details = details;
+
+    Object.setPrototypeOf(this, AppError.prototype);
+  }
+}