add paramter to send extra message when posting to custom alert to an External Endpoint

[simo222]

Describe the feature request

this feature is awsome.

SUCCESS=true
curl -X POST -H "Authorization: Bearer password" "http://gatus:8080/api/v1/endpoints/mygroup-test_test-ep-1/external?success=${SUCCESS}";

however I don't know how to send a custom message.

I have a script runining in a loop trough all events . if everything is fine . I send green.

howver if one of the events has failed , I want to send a red color also and send some extra info which should be visible in the portal

something like this
curl -X POST -H "Authorization: Bearer password" "http://gatus:8080/api/v1/endpoints/mygroup-test_test-ep-1/external?success=${SUCCESS}?message="event X has falied ";

Why do you personally want this feature to be implemented?

to send more info when my script has falied . now I am not able to send any info when doing a post

How long have you been using this project?

No response

Additional information

No response