Ability to modify Dasharo features from within heads

[miczyg1]

The problem you're addressing (if any)

Inability to change settings and options on Dasharo-supported devices running Dasharo (coreboot + heads) firmware flavour.

Describe the solution you'd like

Proposal:

1. Integrate https://github.com/Dasharo/dcu into heads userspace.
2. Allow to modify system settings and options from heads recovery shell.

Nice to have:

Hook the settings and option modification to heads GUI. So that users may see current settings and option values or change them from GUI.

Where is the value to a user, and who might that user be?

Novacustom laptop owners ask how they may change battery thresholds on Dasharo (coreboot + heads) firmware flavour:
https://matrix.to/#/!RNcjJXCGHiyxXCHpKv:matrix.org/$Uoib0AekFAa5NARh3qAfHH2ZM938u_t06jKfNG6NJYg?via=matrix.org&via=nitro.chat&via=tchncs.de

Describe alternatives you've considered

Use the CMOS option backend and have a unified approach to handle settings in heads.

Additional context

No response