Update devcontainer configuration

[Schamper]

Add Rust configuration

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 0.00%. Comparing base (2c2d96e) to head (6862f39).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #108   +/-   ##
=====================================
  Coverage   0.00%   0.00%           
=====================================
  Files         27      27           
  Lines       1881    1881           
=====================================
  Misses      1881    1881           

Flag	Coverage Δ
unittests	0.00% <ø> (ø)

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[codspeed-hq]

CodSpeed Performance Report

Merging #108 will not alter performance

_{Comparing update-devcontainer (6862f39) with main (2c2d96e)}

Summary

✅ 26 untouched
⏩ 10 skipped¹

Footnotes

1. 10 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[Miauwkeru]

wouldn't create a .venv directory here and install it in there? Mostly because we specify to use the .venv directory here: https://github.com/fox-it/dissect-devcontainer-templates/blob/4d8e655cfbad2fcbb38326e144e408853440f068/.devcontainer/devcontainer.json#L29

[Schamper]

Oh forgot to update it here.