api types: add regex, format & schema for partition names

api types: add regex, format & schema for partition names

The new regex is similar to BLOCKDEVICE_NAME_REGEX but also allows
numbers at the end of the device name (also allows partitions names).
For nvme partitions it also allows the letter p and a number.

Signed-off-by: Markus Frank <m.frank@proxmox.com>
Reviewed-by: Lukas Wagner <l.wagner@proxmox.com>
Tested-by: Lukas Wagner <l.wagner@proxmox.com>
Reviewed-by: Max Carrara <m.carrara@proxmox.com>
Tested-by: Max Carrara <m.carrara@proxmox.com>