Support for App Startup Time

[shivank-gupta-01]

@YueChen-C

1. We want to use py-ios-device for measuring App Startup time in iOS applications (like cold, warm, hot etc.).
2. One way or workaround that we can figure out is to relaunch the application (or killing it) using this, and measuring the delta in time from this timestamp in the notifications.
3. We want to know if there is some other ways for calculating App Startup Time so that:

• Eliminate the dependency on relaunching the application.
• Enable measurement during real-time user interactions, such as repeatedly closing and reopening apps, to classify starts as cold, warm, or hot.

[YueChen-C]

https://github.com/YueChen-C/py-ios-device?tab=readme-ov-file#get-app-launch-lifecycle
or
https://github.com/YueChen-C/py-ios-device/blob/main/demo/instrument_demo/app_lifecycle.py
Maybe it helps？