feat: VideoCard 컴포넌트에 이미지 로딩 최적화를 위한 'loading="lazy"' 속성 추가

Author: minsgy

src/routes/my/-components/VideoCard.tsx

@@ -36,6 +36,7 @@ export const VideoCard = ({
           src={thumbnailUrl}
           alt="캐릭터"
           className="absolute inset-0 w-full h-full object-cover"
+          loading="lazy"
         />
       )}
       <div className="p-3 relative h-full z-[15]">