refactor: Added input validation using zod (#790)

* added input validation using zod

* changed console.log to console.error

* fix formatting issues

---------

Co-authored-by: Matthias Nannt <mail@matthiasnannt.com>

packages/lib/utils/validate.ts

@@ -0,0 +1,15 @@
+import z from "zod";
+import { ValidationError } from "@formbricks/types/v1/errors";
+
+type ValidationPair = [any, z.ZodSchema<any>];
+
+export const validateInputs = (...pairs: ValidationPair[]): void => {
+  for (const [value, schema] of pairs) {
+    const inputValidation = schema.safeParse(value);
+
+    if (!inputValidation.success) {
+      console.error(`Validation failed for ${schema}: ${inputValidation.error.message}`);
+      throw new ValidationError("Validation failed");
+    }
+  }
+};