feat: add Style Guides API support

[Copilot]

Exposes the Crowdin Style Guides API endpoints so consumers can manage style guides via the SDK.

New module: src/styleGuides/index.ts

• StyleGuides class with full CRUD: listStyleGuides, createStyleGuide, getStyleGuide, editStyleGuide, deleteStyleGuide
• StyleGuidesModel namespace: StyleGuide response model, CreateStyleGuideRequest, and ListStyleGuidesOptions (supports orderBy, userId, limit, offset)

Client registration: src/index.ts

• StyleGuides imported, re-exported, and registered as styleGuidesApi on the default Client

Usage

import Client from '@crowdin/crowdin-api-client';

const client = new Client({ token: '...' });

// List
const guides = await client.styleGuidesApi.listStyleGuides({ userId: 42 });

// Create
const guide = await client.styleGuidesApi.createStyleGuide({
    name: "iOS Style Guide",
    storageId: 1,
    languageIds: ['uk', 'fr'],
    isShared: false,
});

// Edit (JSON Patch)
await client.styleGuidesApi.editStyleGuide(guide.data.id, [
    { op: 'replace', path: '/name', value: 'Updated Guide' },
]);

// Delete
await client.styleGuidesApi.deleteStyleGuide(guide.data.id);

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Add support for Style Guides API</issue_title>
<issue_description>The Crowdin API introduces a new Style Guides section. API client libraries should be updated to expose the Style Guides endpoints so that consumers can manage style guides (list, create, get, edit, delete) via the SDK.

References:

• Style Guides</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Add support for Style Guides API #629

---

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[codecov]

Codecov Report

❌ Patch coverage is 86.36364% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.83%. Comparing base (95d203d) to head (793255c).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
src/styleGuides/index.ts	84.22%	0 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #634      +/-   ##
==========================================
- Coverage   89.87%   89.83%   -0.03%     
==========================================
  Files          40       41       +1     
  Lines        2101     2123      +22     
  Branches      251      254       +3     
==========================================
+ Hits         1888     1907      +19     
  Misses         82       82              
- Partials      131      134       +3     

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