[FEATURE] Add HW-OPAL support

[thelittlefireman]

hi,
Could it be possible to add OPAL hw support?

Currently blivet-gui only support common LUKS version

blivet-gui/blivetgui/dialogs/helpers.py

Line 157 in 2f4b9e8

def supported_encryption_types():

.
Could you add support for opal https://github.com/storaged-project/blivet/blob/e95471c6df41098697280748ade97624bd6290b9/blivet/devicelibs/crypto.py#L46-L51