Extract Reified method of connection to Extension

Add update method

src/main/kotlin/fr/postgresjson/connexion/Executable.kt

@@ -6,7 +6,7 @@ import fr.postgresjson.entity.EntityI
 
 interface Executable {
 
-    /* Select One */
+    /* Update */
 
     /**
      * Update [EntityI] with one entity as argument
@@ -19,6 +19,8 @@ interface Executable {
     ): R? =
         selectOne(sql, typeReference, listOf(value), block)
 
+    /* Select One */
+
     /**
      * Select One [EntityI] with [List] of parameters
      */