Feature: Allow custom webhooks with custom http header + body

[izelnakri]

Description

Hi there,

I wanted to implement a gitea<->argo CI/CD system, and for this I need to make a HTTP POST request to my argo server with a Bearer token.

In other words in the UI we need a way to add custom http headers and http body(the argo workflow template to trigger via json), not just url and http methods. I think this is an essential feature that gitea needs to support. I can create a simple node.js server that parses the webhooks and makes my requests to the argo server but thats very hacky.

[jolheiser]

Related or duplicate of #1089?

[izelnakri]

Yes I had seen/skimmed that issue, the suggestion there seemed more complex and handles more cases. I didn't want to give an impression that I endorse all the suggestions there, although I dont mean I agree or disagree with their approach.

What Im suggesting here is rather adding 2 form sections to Gitea webhooks: http headers and http body(with default prefilled perhaps)

[stale]

This issue has been automatically marked as stale because it has not had recent activity. I am here to help clear issues left open even if solved or waiting for more insight. This issue will be closed if no further activity occurs during the next 2 weeks. If the issue is still valid just add a comment to keep it alive. Thank you for your contributions.

[techknowlogick]

Merging this into #1089 (and the contents of the template can be covered there, incl. headers)