Allow access to controller context/methods in exception_reporter

[bcroesch]

This PR updates how Scimitar.engine_configuration.exception_reporter is called to allow access to info about the controller action/params. For example:

exception_reporter: Proc.new do |exception|
  Airbrake.notify(exception, {
    action: action_name,
    request_url: request.url,
    example_id: params[:example_id],
  })
end

[pond]

Thanks! That's great. I hope to do a release soon, ish; busy period, not much spare time. You can of course set your Gemfile to pull from GitHub on main if you don't want to wait.

[pond]

This is now available in v2.15.0. Thanks again!

[bcroesch]

@pond - awesome, thanks! And thanks for the great gem!