feat(i18n): add German translations

[pwespi]

PR Checklist

• Brief description of changes
• Links to any relevant issues
• Required status checks are passing
• User cases if changes impact the user's experience
• @mention a maintainer to request a review

• add German translations

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[codecov]

Codecov Report

Merging #2741 (3c5d974) into v3-stable (9f1e813) will increase coverage by 5.72%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##           v3-stable    #2741      +/-   ##
=============================================
+ Coverage      25.15%   30.88%   +5.72%     
=============================================
  Files            119      103      -16     
  Lines           2862     2270     -592     
  Branches         555      447     -108     
=============================================
- Hits             720      701      -19     
+ Misses          1856     1289     -567     
+ Partials         286      280       -6     

Impacted Files	Coverage Δ
...tform/core/src/services/CineService/CineService.js	12.50% <0.00%> (-6.25%)	⬇️
.../services/HangingProtocolService/ProtocolEngine.js	0.00% <0.00%> (-2.18%)	⬇️
.../services/MeasurementService/MeasurementService.js	47.23% <0.00%> (-1.96%)	⬇️
platform/core/src/classes/CommandsManager.js	90.69% <0.00%> (-1.14%)	⬇️
...e/src/services/HangingProtocolService/HPMatcher.js	6.89% <0.00%> (-0.80%)	⬇️
...s/HangingProtocolService/HangingProtocolService.js	0.63% <0.00%> (-0.76%)	⬇️
platform/core/src/classes/MetadataProvider.js	4.72% <0.00%> (-0.54%)	⬇️
...core/src/services/ToolBarService/ToolBarService.js	1.36% <0.00%> (-0.13%)	⬇️
platform/viewer/src/index.js	0.00% <0.00%> (ø)
platform/viewer/src/appInit.js	0.00% <0.00%> (ø)
... and 42 more

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[pwespi]

Rebased on to latest v3-stable.

cc @sedghi

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[sedghi]

v3-stable has moved to master, feel free to change and update base with mater

[sedghi]

closing in favor of #3697