Add voice profile import functionality with file size validation

- Implemented a new endpoint to import voice profiles from ZIP archives.
- Added file size validation to ensure uploads do not exceed 100MB.
- Enhanced error handling for various exceptions during the import process.
- Cleaned up the import function by removing the previous implementation.

landing/src/app/api/releases/route.ts

@@ -10,9 +10,6 @@ export async function GET() {
     return NextResponse.json(releaseInfo);
   } catch (error) {
     console.error('Error fetching release info:', error);
-    return NextResponse.json(
-      { error: 'Failed to fetch release information' },
-      { status: 500 }
-    );
+    return NextResponse.json({ error: 'Failed to fetch release information' }, { status: 500 });
   }
 }