Added infection-config script

Author: staabm

bin/infection-config.php

@@ -0,0 +1,17 @@
+#!/usr/bin/env php
+<?php declare(strict_types = 1);
+
+$opts = getopt('', ['mutator-class:']);
+if (!$opts) {
+	echo "Usage: php ". $argv[0] ." --mutator-class='Infection\Mutator\Removal\MethodCallRemoval'\n";
+	exit(1);
+}
+
+$decoded = json_decode(file_get_contents(__DIR__.'/../resources/infection.json5'));
+foreach($opts['mutator-class'] as $mutatorclass) {
+	$decoded->mutators->$mutatorclass = true;
+}
+
+echo json_encode($decoded);
+
+exit(0);

resources/infection.json5

@@ -0,0 +1,16 @@
+{
+  "$schema": "vendor/infection/infection/resources/schema.json",
+  "timeout": 30,
+  "source": {
+    "directories": [
+      "src"
+    ]
+  },
+  "staticAnalysisTool": "phpstan",
+  "logs": {
+    "text": "tmp/infection.log"
+  },
+  "mutators": {
+    "@default": false
+  }
+}