Improve Vote Comment

Add "targetReference" field into Extra Entity
Add VoteCommentRoute to OpenApi

src/main/kotlin/fr/dcproject/entity/Comment.kt

@@ -6,12 +6,12 @@ import java.util.*
 open class Comment <T: UuidEntity> (
     id: UUID = UUID.randomUUID(),
     createdBy: Citizen,
-    override var target: T,
+    target: T,
     var content: String,
     var responses: List<Comment<T>>? = null,
     var parent: Comment<T>? = null,
     var parentsIds: List<UUID>? = null,
     val childrenCount: Int? = null
-): Extra<T>(id, createdBy),
+): Extra<T>(id, createdBy, target),
     EntityUpdatedAt by EntityUpdatedAtImp(),
     EntityDeletedAt by EntityDeletedAtImp()