Config: Improve the node.config.php transformation

- Add more types
- Improvement for assoziative arrays and key-value arrays
- Add a lot more tests

tests/datasets/config/transformer/D.node.config.php

@@ -0,0 +1,8 @@
+<?php
+
+return [
+	'string_int_values' => [
+		'string_1_not_true' => '1',
+		'string_0_not_false' => '0',
+	],
+];