feat: Add zh translation

[kap1bala]

Adds Simplified Chinese localization for the app and a Chinese-language error page.

Please review it :)

[gemini-code-assist]

Summary of Changes

Hello @kap1bala, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly expands the application's internationalization capabilities by adding comprehensive Simplified Chinese localization. It encompasses the integration of new language resource files, a dedicated error page in Chinese, and necessary updates to the project configuration and runtime logic to ensure the application correctly presents content in Simplified Chinese based on the user's device settings.

Highlights

• Simplified Chinese Localization: Introduced full support for Simplified Chinese (zh-Hans) across the application, including UI strings and specific content.
• Chinese Error Page: Added a dedicated errorPage.zh.html to provide error messages in Simplified Chinese, enhancing user experience for Chinese-speaking users.
• Xcode Project Configuration: Updated the Xcode project file (project.pbxproj) to correctly integrate the new Chinese localization files and register 'zh-Hans' as a supported region.
• WebView Language Detection: Modified the WebView.swift logic to detect and apply the 'zh' language code, ensuring web-based content is displayed in Chinese when appropriate.

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[gemini-code-assist]

Code Review

This pull request adds Simplified Chinese localization to the app, including a new error page and strings for the network usage description. The changes are a good step towards internationalization. However, I've found a critical issue where a referenced localization file (Localizable.strings for Chinese) is missing, which will likely break the build. I've also pointed out a couple of accessibility improvements for the new Chinese error page. Please address these points to ensure the localization is complete and correct.

[kap1bala]

@gemini-code-assist
zh-Hans.lproj/Localizable.strings is a binary file, can you review this?

https://github.com/kap1bala/WLED-iOS/blob/91078b5c4828ecb1f99113e3d5107acf30d505cf/wled/zh-Hans.lproj/Localizable.strings

[gemini-code-assist]

Code Review

This pull request introduces Simplified Chinese localization, which is a great addition. The changes are mostly correct, but I've identified a critical issue: a referenced localization file is missing, which will cause the build to fail. Additionally, I've provided a few suggestions to improve accessibility on the new Chinese error page and a comment on project file organization to enhance maintainability.

[kap1bala]

Seems the bot didn't work well with the binary file. I reviewed it by Copilot and it looked good.
I've changed the UUID sequence. If that's wrong, let me know and I'll revert it.

[Moustachauve]

@kap1bala thanks! Don't worry about the AI review, it's not always giving useful feedback.

[Moustachauve]

I'm doing a major refactoring of the codebase to use websockets. I'd hold off keeping this up to date until it's done, there might be some changes. I'll ping you here when I'm ready.