Add initial railway configuration

railway.json

@@ -0,0 +1,11 @@
+{
+  "$schema": "https://railway.app/railway.schema.json",
+  "build": {
+    "builder": "nixpacks"
+  },
+  "deploy": {
+    "startCommand": "foreman start -p 3000",
+    "restartPolicyType": "ON_FAILURE",
+    "restartPolicyMaxRetries": 2
+  }
+}