feat: add certificate gallery and certifications section components

- Implemented CertificateGallery component to display certification images in a gallery format.
- Created CertificationsSection component to showcase certifications with titles and descriptions.
- Enhanced Gallery component to support animations and keyboard navigation.
- Introduced Select component for dropdown selection with images.
- Added utility functions for API responses and pagination handling.
- Implemented localization functions for text and content.
- Created a custom hook for detecting clicks outside of a component.

src/app/api/contact/route.ts

@@ -1,6 +1,7 @@
 import { NextRequest, NextResponse } from 'next/server';
 import { mkdir, writeFile, readFile } from 'fs/promises';
 import path from 'path';
+import { serverError } from '@/lib/api-response';
 
 const filePath = path.resolve(process.cwd(), 'data', 'contactMessages.json');
 
@@ -45,9 +46,6 @@ export async function POST(request: NextRequest) {
       message: 'Your message has been received.',
     });
   } catch (error) {
-    return NextResponse.json(
-      { error, message: 'مشکلی پیش آمده.' },
-      { status: 400 },
-    );
+    return serverError('مشکلی پیش آمده.');
   }
 }