feat: add localization option to language_detection_options

[gsharp-aai]

Summary

Adds the localization option to language_detection_options, exposing a new field available in the AssemblyAI API. When language detection resolves to English, localization renders the transcript text in a regional spelling variant (e.g. en_au, en_uk) while detection and code-switching continue to work as before.

Changes

• Add localization?: string[] | null to LanguageDetectionOptions
• Bump version to 4.36.5

Usage

const transcript = await client.transcripts.transcribe({
  audio: audioUrl,
  language_detection: true,
  language_detection_options: {
    localization: ["en_au"],
  },
});