Release 0.4.4

What's Changed

Add verse voice by @batanus in https://github.com/MacPaw/OpenAI/pull/334
Make system_fingerprint optional in ChatResult by @uuneo in https://github.com/MacPaw/OpenAI/pull/333
Fix SSE parser by @nezhyborets in https://github.com/MacPaw/OpenAI/pull/336
Handle empty usage in ChatStreamResult by @nezhyborets in https://github.com/MacPaw/OpenAI/pull/339
Feat/update chat completion types by @nezhyborets in https://github.com/MacPaw/OpenAI/pull/337
Issue #345 fix by @maxgribov in https://github.com/MacPaw/OpenAI/pull/346
Make SSLDelegateProtocol completionHandler parameter Sendable by @batanus in https://github.com/MacPaw/OpenAI/pull/344
Update ChatQuery and Result examples by @nezhyborets in https://github.com/MacPaw/OpenAI/pull/349
Extract response handling by @nezhyborets in https://github.com/MacPaw/OpenAI/pull/350
Append Contributing with Code Generation by @nezhyborets in https://github.com/MacPaw/OpenAI/pull/352
Update Responses API with new tools by @nezhyborets in https://github.com/MacPaw/OpenAI/pull/355
Support MCP with Demo by @atom2ueki in https://github.com/MacPaw/OpenAI/pull/357
Support OpenRouter models endpoint by @SplittyDev in https://github.com/MacPaw/OpenAI/pull/356

@uuneo made their first contribution in https://github.com/MacPaw/OpenAI/pull/333
@maxgribov made their first contribution in https://github.com/MacPaw/OpenAI/pull/346
@atom2ueki made their first contribution in https://github.com/MacPaw/OpenAI/pull/357

Full Changelog: https://github.com/MacPaw/OpenAI/compare/0.4.3...0.4.4