celsius

Results 2 issues of celsius

- Corrects 'Universal Kernel Image' to 'Unified Kernel Image'

Uses `libfido2` when validating hidraw devices rather than reading from `/sys/class/hidraw`, and more precisely resolves the timing issue for them when recovering the fido2 password from https://github.com/anatol/booster/commit/31d06a47708a139c159cb96dc7dc067a64230db0. It works but...