[TASK] Migrate away from Commands.php

Configuration/Commands.php

-<?php
-
-return [
-	'sg_news:migrateNews' => [
-		'class' => \SGalinski\SgNews\Command\MigrateNewsCommandController::class
-	]
-];

Configuration/Services.yaml

 services:
-    _defaults:
-        autowire: true
-        autoconfigure: true
-        public: false
+  _defaults:
+      autowire: true
+      autoconfigure: true
+      public: false
 
-    SGalinski\SgNews\:
-        resource: '../Classes/*'
+  SGalinski\SgNews\:
+      resource: '../Classes/*'
 
-    SGalinski\SgNews\Preview\PreviewRenderer:
-      public: true
+  SGalinski\SgNews\Preview\PreviewRenderer:
+    public: true
+
+# Commands
+  SGalinski\SgNews\Command\MigrateNewsCommandController:
+    tags:
+      - name: 'console.command'
+        command: 'sg_news:migrateNews'