Add a route that will trigger a stack trace

So that Colin can test how multi-line log entries are handled by Logit.

To trigger the error, run the app and visit the path `/explode`.

config/routes.rb

@@ -42,4 +42,7 @@ def self.matches?(request)
   # GoodJob admin interface – only accessible to support users
   mount GoodJob::Engine => "/good_job", constraints: SupportUserConstraint
   get "/good_job", to: redirect("/support")
+
+  # Deliberately cause a stack trace so Colin can test how it gets logged
+  get "/explode" => ->(_env) { BOOM! }
 end