添加评论，帖子，用户指标获取，添加经验功能

internal/core/cs/metrics.go

@@ -13,6 +13,10 @@ type TweetMetric struct {
 	PostId          int64
 	IncentiveScore  int
 	DecayFactor     int
+	CommentCount    int32
+	UpvoteCount     int32
+	CollectionCount int32
+	ShareCount      int32
 }
 
 func (m *TweetMetric) RankScore(motivationFactor int) int64 {