feat: add Translation Import API support

[innomaxx]

Closes #222

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.39%. Comparing base (c088f5d) to head (ecd9d4f).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #232      +/-   ##
==========================================
+ Coverage   99.35%   99.39%   +0.04%     
==========================================
  Files         178      182       +4     
  Lines        8225     8433     +208     
  Branches      185      187       +2     
==========================================
+ Hits         8171     8381     +210     
+ Misses         39       36       -3     
- Partials       15       16       +1     

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