Add debug symbols to iOS GitHub release

[louwers]

Closes #2233

Once this is merged I can attempt to make a pre-release.

[louwers]

Looking at

• https://developer.apple.com/documentation/xcode/adding-identifiable-symbol-names-to-a-crash-report
• https://developer.apple.com/documentation/xcode/adding-identifiable-symbol-names-to-a-crash-report#Symbolicate-the-crash-report-in-Xcode
• https://developer.apple.com/documentation/xcode/adding-identifiable-symbol-names-to-a-crash-report#Symbolicate-the-crash-report-with-the-command-line

this should do what you want.

Let me know if you need debug symbols for the simulator as well.

[github-actions]

Bloaty Results (iOS) 🐋

Compared to main

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  [ = ]       0  [ = ]       0    TOTAL

Full report: https://maplibre-native.s3.eu-central-1.amazonaws.com/bloaty-results-ios/pr-2234-compared-to-main.txt