Fix VBK exception types

[Schamper]

They weren't all properly defined and subclassed.

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 68.81%. Comparing base (91e1ee7) to head (c69a632).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
dissect/archive/vbk.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #15      +/-   ##
==========================================
- Coverage   68.92%   68.81%   -0.11%     
==========================================
  Files           9        9              
  Lines        1197     1193       -4     
==========================================
- Hits          825      821       -4     
  Misses        372      372              

Flag	Coverage Δ
unittests	68.81% <50.00%> (-0.11%)	⬇️

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