feat: Add new Pre-Translation Report endpoint support

[Ribas160]

Closes #108

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.23%. Comparing base (a1b22f3) to head (b454ab1).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #126      +/-   ##
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+ Coverage   98.22%   98.23%   +0.01%     
==========================================
  Files          68       68              
  Lines        3314     3318       +4     
==========================================
+ Hits         3255     3259       +4     
  Misses         33       33              
  Partials       26       26              

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[Copilot]

Pull Request Overview

This PR adds support for fetching pre-translation reports from the Crowdin API. It introduces a new endpoint to retrieve detailed report data about pre-translation operations, including language-specific statistics, file information, and skipped translation details.

• Adds PreTranslationReport method to the TranslationsService
• Introduces model structs for pre-translation report data
• Includes comprehensive test coverage for the new functionality

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
crowdin/translations.go	Adds PreTranslationReport method to retrieve report data for a specific pre-translation
crowdin/model/translations.go	Defines model structs for pre-translation report data including language reports, statistics, and skipped items
crowdin/translations_test.go	Adds test case for the new PreTranslationReport method with sample response and expected output

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[andrii-bodnar]

@Ribas160 thank you!