feat(ranking): 랭킹 내부 모델을 추가한다

src/main/kotlin/kr/co/vividnext/sodalive/v2/ranking/domain/CreatorRankingItem.kt

@@ -0,0 +1,10 @@
+package kr.co.vividnext.sodalive.v2.ranking.domain
+
+data class CreatorRankingItem(
+    val rank: Int,
+    val rankChange: Int?,
+    val isNew: Boolean,
+    val creatorId: Long,
+    val nickname: String,
+    val profileImageUrl: String?
+)

src/main/kotlin/kr/co/vividnext/sodalive/v2/ranking/domain/CreatorRankingSnapshotCandidate.kt

@@ -0,0 +1,21 @@
+package kr.co.vividnext.sodalive.v2.ranking.domain
+
+data class CreatorRankingSnapshotCandidate(
+    val creatorId: Long,
+    val nickname: String,
+    val profileImageUrl: String?,
+    val finalScore: Double,
+    val contentLiveScore: Double,
+    val engagementScore: Double,
+    val supportScore: Double,
+    val fanLoyaltyScore: Double,
+    val liveCanAmount: Long,
+    val contentPurchaseCanAmount: Long,
+    val contentLikeCount: Long,
+    val contentCommentCount: Long,
+    val channelDonationCanAmount: Long,
+    val channelDonationCount: Long,
+    val fanTalkCount: Long,
+    val finalFollowerCount: Long,
+    val followIncrease: Long
+)