[Request] Default recording name, or name template interpolation

### Describe the feature

Would be great if the `name` of new recording could default to `namespace_pod_start_time` instead of empty, or even better - to set a default template using labels / cryostat annotations as they are present - `{{NAMESPACE}}_{{POD_NAME}}_{{current_time}}`

Cryostat annotations

### Anything other information?

_No response_

No file, test, or entry point is named. Start by locating where new recording names are created and where Kubernetes labels or Cryostat annotations are read; define the supported default and template variables before tracing their use. Done means new recordings receive the agreed default name or interpolated template consistently.

Written by the indexing model from the issue text.