feat: 라이브 메인 API

- 기존에 섹션별로 따로따로 호출하던 것을 하나로 합쳐서 호출할 수 있도록 API 추가

src/main/kotlin/kr/co/vividnext/sodalive/live/recommend/LiveRecommendService.kt

@@ -3,15 +3,21 @@ package kr.co.vividnext.sodalive.live.recommend
 import kr.co.vividnext.sodalive.member.Member
 import kr.co.vividnext.sodalive.member.MemberRole
 import kr.co.vividnext.sodalive.member.block.BlockMemberRepository
+import org.springframework.cache.annotation.Cacheable
 import org.springframework.data.domain.Pageable
 import org.springframework.stereotype.Service
+import org.springframework.transaction.annotation.Transactional
 
 @Service
 class LiveRecommendService(
     private val repository: LiveRecommendRepository,
     private val blockMemberRepository: BlockMemberRepository
 ) {
-
+    @Transactional(readOnly = true)
+    @Cacheable(
+        cacheNames = ["cache_ttl_3_hours"],
+        key = "'getRecommendLive:' + (#member ?: 'guest')"
+    )
     fun getRecommendLive(member: Member?): List<GetRecommendLiveResponse> {
         return repository.getRecommendLive(
             isBlocked = {