Is your feature request related to a problem? Please describe.
Traefik 2.10 has introduced their new API group traefik.io, in addition to deprecating traefik.containo.us.
They have stated that traefik.containo.us will be removed in traefik 3.
Please see https://traefik.io/blog/announcing-traefik-proxy-2-10/

It's been stated that this migration prior to v3 is to potentially support a webhook that may be provided by traefik later on to support updating from traefik.io/v1alpha1 to traefik.io/v1

Describe the solution you'd like
Consider supporting both API groups, either by a configuration option in the outpost config, or by detecting the presence of the newer group and preferring that.

Describe alternatives you've considered
Could always keep using the legacy one until it gets completely removed in traefik v3.

Additional context
Add any other context or screenshots about the feature request here.