Export cyberchef error types to be used in consuming applications

src/core/errors/index.mjs

@@ -0,0 +1,9 @@
+import OperationError from "./OperationError.mjs";
+import DishError from "./DishError.mjs";
+import ExcludedOperationError from "./ExcludedOperationError";
+
+export {
+    OperationError,
+    DishError,
+    ExcludedOperationError,
+};