implement persistence

config/providers/persistence.rb

@@ -0,0 +1,19 @@
+Hanami.app.register_provider :persistence, namespace: true do
+  prepare do
+    require 'rom'
+
+    config = ROM::Configuration.new(:sql, target["settings"].database_url)
+
+    register "config", config
+    register "db", config.gateways[:default].connection
+  end
+
+  start do
+    config = target["persistence.config"]
+
+    config.auto_registration(target.root.join('lib/euchre_camp/persistence'), 
+    namespace: "EuchreCamp::Persistence")
+
+    register "rom", ROM.container(config)
+  end
+end