Add iPhone cable support via usbmuxd and gvfs-afc

[basalto]

Summary

Adds out-of-the-box support for Apple iPhone cable connections (both Personal Hotspot / USB tethering and native file/photo access) in Omarchy.

• usbmuxd: Provides the USB multiplexing daemon and udev rules (/usr/lib/udev/rules.d/39-usbmuxd.rules). When an iPhone is connected, udev automatically triggers usbmuxd.service on-demand and stops it when disconnected.
• libimobiledevice: CLI tools (idevicepair, ideviceinfo) and communication libraries required for device pairing and trust certificate verification.
• gvfs-afc: Apple File Conduit backend for GVFS, enabling native iOS document and photo browsing in Nautilus and other file managers without needing FUSE or ifuse.

Screenshot

Changes

• install/omarchy-base.packages: Adds gvfs-afc, libimobiledevice, and usbmuxd in alphabetical order.
• migrations/1789324177.sh: Installs gvfs-afc, libimobiledevice, and usbmuxd on existing systems via omarchy-pkg-add.

Testing

• Executed migration 1789324177.sh via omarchy-pkg-add.
• Verified on-demand udev activation of usbmuxd.service upon plugging in iPhone.
• Verified successful pairing validation via idevicepair validate.
• Verified USB tethering auto-configuration via NetworkManager (nmcli device status).
• Verified filesystem detection in GVFS via gio mount -l (GProxyVolumeMonitorAfc).
• Ran ./test/shell.d/preinstalls-test.sh, ./test/shell.d/migrate-scope-test.sh, ./test/shell.d/migrate-wrapper-test.sh, and bin/omarchy commands --check.

[Jamesking56]

While I am generally against installing random packages on everyone's machines by default, this feels like it should be merged as most users would just expect connecting an iPhone for tethering to "just work".