Add new October 2022 devices to devicelist.

[Zandor300]

Add new devices that were announced/released in October 2022:

• iPad (10th generation)
• iPad Pro (11-inch) (4th generation)
• iPad Pro (12.9-inch) (6th generation)

Also fixed "iPad Pro (11-inch) (3rd generation)" being reported as "5th generation".

Also changed Apple TV naming:

• Renamed "Apple TV (4th generation)" to "Apple TV HD".
• Replaced "2G" naming scheme to "2nd generation"

[Zandor300]

The current devicelist for Apple devices is a bit messy, with different naming schemes for different devices. Some devices are separated by whether they have cellular or not and others aren't.

I think this could be cleaned up a bit by going through all devices and correcting the naming scheme. In this case, I would suggest the naming scheme that I used in the PR description. This is the naming scheme used by Apple:

• iPad (10th generation)
• iPad Pro (11-inch) (4th generation)
• iPad Pro (12.9-inch) (6th generation)

Additionally, I think the cellular specification should be dropped from the devicelist and this should be its own metric that Countly keeps track of. Countly already keeps track of the carrier the user is using anyway.

I would volunteer to do this, but maybe renaming previously added devices is discouraged? What do you think?

Also opened issue #3619 for this.