add citizen in ApplicationCall

src/main/kotlin/fr/dcproject/repository/Citizen.kt

@@ -7,6 +7,7 @@ import fr.postgresjson.repository.RepositoryI.Direction
 import net.pearx.kasechange.toSnakeCase
 import java.util.*
 import fr.dcproject.entity.Citizen as CitizenEntity
+import fr.dcproject.entity.User as UserEntity
 
 class Citizen(override var requester: Requester) : RepositoryI<CitizenEntity> {
     override val entityName = CitizenEntity::class
@@ -17,6 +18,12 @@ class Citizen(override var requester: Requester) : RepositoryI<CitizenEntity> {
             .selectOne("id" to id)
     }
 
+    fun findByUser(user: UserEntity): CitizenEntity? {
+        return requester
+            .getFunction("find_citizen_by_user_id")
+            .selectOne("user_id" to user.id)
+    }
+
     fun find(
         page: Int = 1,
         limit: Int = 50,