feat: add support for the list and edit pre-translation API endpoints

[dyadyaJora]

Added methods for new pre-translation API endpoints:

• listPreTranslations for List Pre-Translations
• editPreTranslation for Edit Pre-Translation

Closes #266

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 96.29630% with 1 line in your changes missing coverage. Please review.

Project coverage is 93.50%. Comparing base (5fa30d9) to head (ac175b2).

Files with missing lines	Patch %	Lines
...wdin/client/translations/model/PreTranslation.java	92.86%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #268      +/-   ##
============================================
+ Coverage     93.47%   93.50%   +0.04%     
- Complexity      726      729       +3     
============================================
  Files           178      180       +2     
  Lines          2355     2382      +27     
  Branches         50       52       +2     
============================================
+ Hits           2201     2227      +26     
- Misses          130      131       +1     
  Partials         24       24              

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[andrii-bodnar]

@dyadyaJora thanks and congratulations on your first contribution!

I only have a few minor comments. Please address them and the PR will be merged.