[opengarage] Add door transition status support (#14028)

[opengarage] Add door transition status support (#14028)

* Add support for garage door transition status

Homekit requires a status for the garage door of OPEN, CLOSED, CLOSING,
OPENING. In order to report that, we must provide state transition
information. State transition information is inferred when the garage
door state is changed. For door_transition_time_seconds since the last
open/close command was issued, the binding reports the state as either
"closing" or "opening".

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Signed-off-by: Tim Harper <timcharper@gmail.com>
Co-authored-by: Laurent Garnier <lg.hc@free.fr>