Ready for screenshots generation, except for the tests themselves and
the TV target.
- More customizations while UI testing
- Act as full version user in IAPManager
- Override layout with default to .grid if isBigDevice
- Show module names in profile list/grid
- Improve mock Profile/ProfileManager
- Meaningful profile names
- iCloud/TV icons
- Initial modules
- Improve XCTest extensions
- Screenshot destination (attachment/temporary)
- Screenshot target (window/sheet)
- Print saved temporary URL at the end (may help with CI)
- Append device name to screenshot filename
- Tests
- Refactor actions with the [Page Object
pattern](https://swiftwithmajid.com/2021/03/24/ui-testing-using-page-object-pattern-in-swift/)
- Perform iPad screenshots in landscape
- Split simple flow tests and screenshots
- Add "Connect to" test
Closes#681
Reuse the same receipt trick from iOS.
Also, fix a regression in IAPManager.fetchLevelIfNeeded() from #903,
where a guard after an await was dropped leading to reentrancy issues.
Davide