For testing build a safari extension, just run it in Xcode. It will auto build the app and load it into Safari.

• For the first time: ref: https://instabug.com/blog/how-to-submit-app-to-app-store/
• Routine update: https://help.apple.com/xcode/mac/current/#/dev442d7f2ca

Change the version number and build number before upload it to app store

https://www.youtube.com/watch?v=DLvdZtTAJrE&t=1208s

1. Follow Overall Guidance: Overview for configuring in-app purchases
   1. Create In-App-Purchase from App Store Connect page
   2. Generate In-App-Purchase key