Feature request: Show which machine types support nested virtualization

[Lythenas]

Is your feature request related to a problem? Please describe.
For one of my use cases need to use machine types that support nested virtualization.

Describe the solution you'd like
Add a new row to the instance picker grid that shows if the instance supports nested virtualization (yes/no) like for Spot, SAP, HANA.

Describe alternatives you've considered

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

What machine types support nested virtualization is listed e.g. here https://cloud.google.com/compute/docs/machine-resource#machine_type_comparison