Global response header for vmauth

Is your feature request related to a problem? Please describe

With release v1.94.0 we can set HTTP response header for each user or token we specify. However, in most cases we will set the same response headers for all user and tokens. This is very cumbersome.

Describe the solution you'd like

It would be great if global HTTP resonse headers could be set globaly like e.g. ip_filters.

Describe alternatives you've considered

Set the same headers for all the users.

Additional information

No response