[+] Metrics (#95)

* Add actuator and micrometer

* update

* [-] Remove unused import

* [O] Make code less verbose

* format

* refactor

---------

Co-authored-by: Azalea <22280294+hykilpikonna@users.noreply.github.com>

src/main/java/ext/Ext.kt

@@ -163,6 +163,7 @@ val Any?.truthy get() = when (this) {
 
 // Collections
 fun <T> ls(vararg args: T) = args.toList()
+inline fun <reified T> arr(vararg args: T) = arrayOf(*args)
 operator fun <K, V> Map<K, V>.plus(map: Map<K, V>) =
     (if (this is MutableMap) this else toMutableMap()).apply { putAll(map) }
 operator fun <K, V> MutableMap<K, V>.plusAssign(map: Map<K, V>) { putAll(map) }