devel/kio-extras: Add option to hande AFC (Apple File Conduit) KIO worker (+)

Currently AFC dependencies hiddenly comes from devel/kf5-solid if it built with
libimobiledevice support but no libraries comes to package due to be missed in plist.

Declare a new options knob to handle AFC support direcly in kio port.

Reported by:	poudriere failure
Sponsored by:	Serenity Cybersecurity, LLC