[homekit] Improve output of console's `homekit show` command (#13569)

[homekit] Improve output of console's `homekit show` command (#13569)

* [homekit] Improve output of console's `homekit show` command

 * include the full JSON from all the characteristics, so you can confirm
   everything is configured correctly.
 * only use simple class names; the fully qualified package is just a
   distraction.
 * show linked services if they exist
 * include the class name of services, not just the GUID

Signed-off-by: Cody Cutrer <cody@cutrer.us>