Ol qemu confidential controller

[olethanh]

Add the Qemu confidential controler, and endpoints to retrieve the measurements.

[hoh]

Nice start !

I commented on simple stuff not to forget since the PR is still in Draft.

[olethanh]

@hoh Thanks ! but I just opened it so we could sync with @nesitor, I will refactor the whole thing and improve the style then so no need to waste time in stylistic review for now

[codecov]

Codecov Report

Attention: Patch coverage is 48.86878% with 113 lines in your changes missing coverage. Please review.

Project coverage is 59.10%. Comparing base (84fec2e) to head (3bc1969).

Files	Patch %	Lines
...c/aleph/vm/hypervisors/qemu_confidential/qemuvm.py	31.25%	33 Missing ⚠️
src/aleph/vm/orchestrator/views/operator.py	33.33%	30 Missing ⚠️
...aleph/vm/controllers/qemu_confidential/instance.py	60.00%	24 Missing ⚠️
src/aleph/vm/controllers/qemu/client.py	55.55%	16 Missing ⚠️
src/aleph/vm/controllers/__main__.py	16.66%	4 Missing and 1 partial ⚠️
src/aleph/vm/models.py	50.00%	2 Missing and 1 partial ⚠️
src/aleph/vm/hypervisors/qemu/qemuvm.py	0.00%	1 Missing ⚠️
src/aleph/vm/orchestrator/run.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@                 Coverage Diff                  @@
##           dev-confidential     #620      +/-   ##
====================================================
- Coverage             59.30%   59.10%   -0.21%     
====================================================
  Files                    62       65       +3     
  Lines                  5588     5778     +190     
  Branches                618      627       +9     
====================================================
+ Hits                   3314     3415     +101     
- Misses                 2130     2217      +87     
- Partials                144      146       +2     

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[nesitor]

We can leave the tests and the refactor for a later step and continue advancing on that feature.