Add volume create, view, backup features to kubernetes

[hookenz]

Is your feature request related to a problem? Please describe

The kubernetes volume management is basically non-existent in Portainer. That means I need to switch away from Portainer and use kubectl again. You can currently only view the PVC's in Portainer but you can't do anything beyond that except deleting them.

Describe the solution you'd like

Create with form. With a dropdown to select the class and size and any other tags you might want to type in.
And then create it.

And in the listing view, if a PVC is not attached to anything it should be easy to attach to the container a debug pod which you can then use to list the files like with the docker browser.

Describe alternatives you've considered

none

Additional context

No response