feature #10: first implementation of logger

src/main/kotlin/fr/postgresjson/utils/LoggerDelegate.kt

@@ -0,0 +1,11 @@
+package fr.postgresjson.utils
+
+import org.slf4j.Logger
+import org.slf4j.LoggerFactory
+import kotlin.properties.ReadOnlyProperty
+import kotlin.reflect.KProperty
+
+internal class LoggerDelegate<in R : Any> : ReadOnlyProperty<R, Logger> {
+    override fun getValue(thisRef: R, property: KProperty<*>)
+        = LoggerFactory.getLogger(thisRef.javaClass.packageName)
+}