Let QCow2Container init to pass fh directly as Path

[andreia-oca]

This PR is related to this PR.

Pass the original fh parameter directly to QCow2 constructor, relying on QCow2 to handle Path or file-like objects.
This allows QCow2 to automatically resolve backing files if they are required.

The change can be end2end tested by attempting to run target-info or target-query on a qcow2 snapshot with a backing-file.

I've tested against a standalone qcow2 image to check if backwards comp is maintained and against a qcow2 snapshot with a backing-file.

Fixes #1154

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[andreia-oca]

@DissectBot agree

[Schamper]

I've piggy backed on this PR to fix compatibility with the upcoming changes in fox-it/dissect.hypervisor#61.

[twiggler]

LGTM

[codecov]

Codecov Report

❌ Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (main@06990b8). Learn more about missing BASE report.
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
dissect/target/containers/qcow2.py	0.00%	6 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1160   +/-   ##
=======================================
  Coverage        ?   80.29%           
=======================================
  Files           ?      374           
  Lines           ?    33086           
  Branches        ?        0           
=======================================
  Hits            ?    26568           
  Misses          ?     6518           
  Partials        ?        0           

Flag	Coverage Δ
unittests	80.29% <0.00%> (?)

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[codspeed-hq]

CodSpeed Performance Report

Merging #1160 will not alter performance

_{Comparing andreia-oca:main (b5522d9) with main (06990b8)}

Summary

✅ 8 untouched benchmarks

[andreia-oca]

I've piggy backed on this PR to fix compatibility with the upcoming changes in fox-it/dissect.hypervisor#61.

That's great, thanks for looking into it :D