Clean the request process

Remove paginated
Remove Entity classes
Add Annotation for serialize object
rename selectOne/selectMultiple to execute

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

@@ -0,0 +1,6 @@
+package fr.postgresjson.connexion
+
+class DataNotFoundException(val queryExecuted: String): Exception() {
+    override val message: String
+        get() = "No data return for the query"
+}