Fully implement snip db storage

config/services.yaml

@@ -4,6 +4,8 @@
 # Put parameters here that don't need to change on each machine where the app is deployed
 # https://symfony.com/doc/current/best_practices.html#use-parameters-for-application-configuration
 parameters:
+    snipStorageType: 'db' # 'db' or 'git
+    gitStoragePath: '%kernel.project_dir%/var/snips'
 
 services:
     # default configuration for services in *this* file
@@ -26,4 +28,5 @@ services:
 
     App\Service\SnipServiceFactory:
         arguments:
-            - '%kernel.project_dir%/var/snips'
+            $gitStoragePath: '%gitStoragePath%'
+            $storageType: '%snipStorageType%'