add stout toml

stout.toml

@@ -0,0 +1,16 @@
+name        = "hello-world"
+description = "SvelteKit hello-world demo app"
+
+[build]
+context = "."
+
+[processes.web]
+type = "server"
+port = 3000
+
+[deploy]
+strategy            = "rolling"
+approval            = "auto"
+rollback_on_failure = true
+health_check_path   = "/"
+health_check_grace  = 15