bacalhau WebUI does not work with TLS

[frrist]

The WebUI needs to accept a TLS config at a minimum, currently it does not.

bacalhau/cmd/cli/serve/serve.go

Lines 312 to 330 in 860d58c

	if startWebUI {
	listenPort, err := config.Get[int](types.NodeWebUIPort)
	if err != nil {
	return err
	}
	apiURL := standardNode.APIServer.GetURI().JoinPath("api", "v1")
	go func() {
	// Specifically leave the host blank. The app will just use whatever
	// host it is served on and replace the port and path.
	apiPort := apiURL.Port()
	apiPath := apiURL.Path
	err := webui.ListenAndServe(ctx, "", apiPort, apiPath, listenPort)
	if err != nil {
	cmd.PrintErrln(err)
	}
	}()
	}

In order to enable the work done in #3711 this issue needs to be addressed as there is no point sharing a token with the WebUI over an unsecured connection.

[frrist]

I believe the simple/correct fix here is to re-use the API server config, or at least a portion of it, to instantiate the WebUI.