Apple AirTag model

This is a replica of an Apple AirTag, modeled following Apple's specifications as described in the **Accessory Design Guidelines for Apple Devices** (page 400):

(https://developer.apple.com/accessories/Accessory-Design-Guidelines.pdf)

This should be useful to determine the right clearance for your parts in case they need to physically interact with a real AirTag, but you do not own one yourself.