feat(validation): Implement form validation and error handling utilities

- Add validation rules for form fields with XSS protection
- Create API error handler to parse and manage server validation errors
- Integrate validation rules into contact and inquiries forms
- Enhance error handling with user feedback for form submissions
- Introduce unit tests for validation and error handling functionalities

jest.config.js

@@ -0,0 +1,10 @@
+/** @type {import('ts-jest').JestConfigWithTsJest} */
+module.exports = {
+  preset: "ts-jest",
+  testEnvironment: "node",
+  roots: ["<rootDir>/lib"],
+  testMatch: ["**/__tests__/**/*.test.ts"],
+  moduleNameMapper: {
+    "^@/(.*)$": "<rootDir>/$1",
+  },
+};