This is an HTTP server that loads a directory of Jsonnet files and serves each one as a webhook.
Each hook should evaluate to a Jsonnet function:
function(request) {
// response body
}The body of the POST request is itself interpreted as Jsonnet
and given to the hook as a top-level request argument.
The entire result of evaluating the Jsonnet function is returned as the webhook response body, unless the function returns an error.