make GroutError status a getter

src/errors/groutError.ts

@@ -1,14 +1,16 @@
 import { ErrorType, ErrorTypeStatuses } from "./errorType";
 
 export class GroutError extends Error {
-    status: number;
     errorType: ErrorType;
 
     constructor(message: string, errorType: ErrorType) {
         super(message);
 
         this.name = "GroutError";
-        this.status = ErrorTypeStatuses[errorType];
         this.errorType = errorType;
     }
+
+    get status() {
+        return ErrorTypeStatuses[this.errorType];
+    }
 }