feat(form): enhance and refactor contact form to inquiries form

This commit refactors the contact form into a more robust inquiries form, relocating it from `/contact-us` to a new `/inquires` route.

Key changes include:
- Renamed and moved the component from `ContactUs` to `Inquires`.
- Updated form fields: removed "Company Name", added "Message", and renamed "Work Email" and "Phone Number" for clarity.
- Implemented comprehensive client-side validation for all fields using `react-hook-form`.
- Added a loading state to the submit button to provide user feedback during submission.
- The form now automatically resets upon successful submission.
- Introduced new reusable `TextareaGroup` and `Loading` components to support the enhanced form functionality.

app/_components/Loading.tsx

@@ -0,0 +1,20 @@
+function Loading({ size = "md" }: { size?: "sm" | "md" | "lg" }) {
+  const sizeClasses = {
+    sm: "w-4 h-4 border-2",
+    md: "w-8 h-8 border-3",
+    lg: "w-12 h-12 border-4",
+  };
+
+  return (
+    <div className="inline-block">
+      <div
+        className={`${sizeClasses[size]} border-gray-200 border-t-blue-600 rounded-full animate-spin`}
+        role="status"
+        aria-label="Loading">
+        <span className="sr-only">Loading...</span>
+      </div>
+    </div>
+  );
+}
+
+export default Loading;