add votes to article

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

@@ -19,6 +19,9 @@ class Article(
     EntityCreatedAt by EntityCreatedAtImp(),
     EntityCreatedBy<Citizen> by EntityCreatedByImp(createdBy),
     EntityDeletedAt by EntityDeletedAtImp() {
+
+    val votes = VoteAggregation(0,0,0)
+
     init {
         tags = tags.distinct()
     }

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

@@ -0,0 +1,10 @@
+package fr.dcproject.entity
+
+import fr.postgresjson.entity.EntityUpdatedAt
+import fr.postgresjson.entity.EntityUpdatedAtImp
+
+open class VoteAggregation (
+    val up: Int,
+    val neutral: Int,
+    val down: Int
+): EntityUpdatedAt by EntityUpdatedAtImp()