ANXOS-390: German translations

[beachmachine]

Important: Dependes on PR #1

Implemented:

• Added German translation file

[codecov]

Codecov Report

Attention: Patch coverage is 84.87395% with 18 lines in your changes missing coverage. Please review.

Please upload report for BASE (main@ef8158e). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
django_fernet/fernet.py	87.17%	10 Missing ⚠️
django_fernet/fields.py	78.37%	8 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main       #2   +/-   ##
=======================================
  Coverage        ?   84.87%           
=======================================
  Files           ?        3           
  Lines           ?      119           
  Branches        ?        0           
=======================================
  Hits            ?      101           
  Misses          ?       18           
  Partials        ?        0           

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