feat: Introduce fe modular build system

fe-app-podkop/src/validators/validateIp.ts

@@ -0,0 +1,12 @@
+import { ValidationResult } from './types.js';
+
+export function validateIPV4(ip: string): ValidationResult {
+  const ipRegex =
+    /^(?:(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\.){3}(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])$/;
+
+  if (ipRegex.test(ip)) {
+    return { valid: true, message: 'Valid' };
+  }
+
+  return { valid: false, message: 'Invalid IP address' };
+}