feat: Add support for new String Corrections API

[ShravanAYG]

fixes #112

[codecov-commenter]

Codecov Report

❌ Patch coverage is 1.58730% with 62 lines in your changes missing coverage. Please review.
✅ Project coverage is 96.40%. Comparing base (927bd62) to head (593bfe5).

Files with missing lines	Patch %	Lines
crowdin/model/string_corrections.go	0.00%	37 Missing ⚠️
crowdin/string_corrections.go	0.00%	25 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #115      +/-   ##
==========================================
- Coverage   97.99%   96.40%   -1.58%     
==========================================
  Files          68       70       +2     
  Lines        4213     3359     -854     
==========================================
- Hits         4128     3238     -890     
- Misses         59       95      +36     
  Partials       26       26              

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[andrii-bodnar]

@ShravanAYG please add descriptive comments to the model and the service.

Look at other resources as an example. For instance: https://github.com/crowdin/crowdin-api-client-go/blob/main/crowdin/model/branches.go
https://github.com/crowdin/crowdin-api-client-go/blob/main/crowdin/branches.go