chg: usr: make fancy og tags - and create a special one for battle sharing #4

config/services.yaml

@@ -25,6 +25,10 @@ services:
     resource: '../src/Controller'
     tags: [ 'controller.service_arguments' ]
 
+  App\Service\BattleCardGenerator:
+    arguments:
+      $cacheDir: '%kernel.project_dir%/var/og-cache'
+
   Aws\S3\S3Client:
     arguments:
       - version: 'latest'