Add devcontainer

[Schamper]

Adds a devcontainer to make getting started with Dissect development easier, as well as provide a better Codespace experience.

Depends on fox-it/dissect-devcontainer-templates#1

Closes #58.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.38%. Comparing base (2037847) to head (9e0cde6).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #57   +/-   ##
=======================================
  Coverage   87.38%   87.38%           
=======================================
  Files          20       20           
  Lines        1292     1292           
=======================================
  Hits         1129     1129           
  Misses        163      163           

Flag	Coverage Δ
unittests	87.38% <ø> (ø)

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[codspeed-hq]

CodSpeed Performance Report

Merging #57 will not alter performance

_{Comparing devcontainer (9e0cde6) with main (2037847)}

Summary

✅ 11 untouched benchmarks