Multiple fixes

* Implemented ScriptRunner with environment expansion and cleaner
  code.
* Added ApiClient plugin (com.noccy.apiclient)
* Renamed CHANGELOG.md to VERSIONS.md
* Shuffled buildtools
* Added first unittests

plugins/com.noccy.apiclient/Api/Profile.php

@@ -0,0 +1,13 @@
+<?php // "name":"Call on web APIs", "author":"Noccy"
+
+namespace SparkPlug\Com\Noccy\ApiClient\Api;
+
+class Profile
+{
+    private array $properties = [];
+
+    public function getProperties(): array
+    {
+        return $this->properties;
+    }
+}