Healthchecks for extension services

[WinterNis]

Feature Request

Be able to define healthchecks for extension services. So we can check the health status with talosctl services

Description

It would be great if we could define healthchecks for extensions services.

It should probably be defined on the yaml extension service config file.

Today the only thing we see about the service with the talosctl services command is Started task [...] (PID xxxx) for container [...]
We could see the healthcheck status if it’s defined.

Also, talos could restart the container if the healthcheck starts failing for too long.