Expose the built in Rust wipe timers to oxide API#26

It would be interesting to see the built in wipe timer be exposed to the oxide API. “wipetimer.printwipe” “wipetimer.wipecronoverride” “wipetimer.wipedayofweek” “wipetimer.wipehourofday” “wipetimer.wipetimezone” “wipetimer.wipeunixtimestampoverride”