Previously, DeveloperDiskImages were only differentied by OS version, which meant (for example) iOS 15.0 and tvOS 15.0 disk images were cached to the same location. Now iOS and tvOS disk images are stored separately, so AltServer will no longer try to use a cached disk image for the wrong OS.
Allows AltServer to programmatically initiate a debug session with AltStore, which can be used to start a background refresh or enable JIT on demand.
[AltServer] Renames ALTDevice variable name
