Add Indonesian (id-ID) localization

[dionarya23]

Description

This PR adds Indonesian (Bahasa Indonesia) localization support to Lyricify.

Changes

• Added i18n/Lyricify 4/Language.id-ID.xaml with complete Indonesian translations
• Translated all UI strings and messages to Indonesian

Checklist

• All translation keys are present and match the source file
• Translations are accurate and natural in Indonesian
• File follows the existing XAML structure and format

[WXRIW]

Hello, thank you for your contribution to the localization! Before merging, I noticed a few issues — many parts are missing from the file. For example, a large section starting from line 658 is absent. Please resubmit it after making the corrections. You can verify it by checking whether the total number of lines matches exactly.

[dionarya23]

@WXRIW
Hi, thanks for catching that!

My bad, looks like I missed a big chunk when preparing the file. I'll double-check the line count against the original and resubmit the complete version soon.

Appreciate your patience! 🙏

[WXRIW]

By the way, there’s no need to rush with the fixes. I’ve been quite busy recently, and the next software update will likely be around the end of the year or early next year. So you can take your time — feel free to submit updates anytime during this period. Thanks again for your contribution!