Add missing init file

[JSCU-CNI]

This PR adds a missing __init__.py file to dissect/target/plugins/apps/other/__init__.py.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.69%. Comparing base (e6e5e28) to head (4a54143).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #916   +/-   ##
=======================================
  Coverage   76.69%   76.69%           
=======================================
  Files         316      316           
  Lines       27109    27109           
=======================================
  Hits        20790    20790           
  Misses       6319     6319           

Flag	Coverage Δ
unittests	76.69% <ø> (ø)

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