Initial operating system work

Adds a draft for most of the operating system work, sans external things like EDK2 and kernel build which will be pushed later in a separate diff.

* Sealing/Unsealing of encrypted and integrity-protected data partition using TPM2
* PID1 standard behaviour (mounting minimal filesystems, cleaning up orphans)
* TPM2.0 helper library
* Block device finding and mounting

Test Plan: Manually tested, CI will be dealt with later.

X-Origin-Diff: phab/D157
GitOrigin-RevId: 6fc494f50cab1f081c3d352677158c009f4d7990
4 files changed
tree: 558ca2744e8ba310f36362ae68cb48e0511ea376
  1. cmd/
  2. pkg/