* Add standby switch
* Add support for arbitrary run duration in start_single_valve action
* Add divider feature
* Allow zero multiplier
* Fixes for #3740, misc. cleanup and polishing
* Integrate number components for multiplier, repeat and run duration
* Add various methods to get time remaining
* Add next_prev_ignore_disabled flag
* Optimize next/previous valve selection methods
* Add numbers_use_minutes flag
* Initialize switch states as they are set up
* Ensure SprinklerControllerSwitch has state if it's not restored
* Add repeat validation
* Misc. clean-up and tweaking
* Fix bugprone-integer-division
* More clean-up
* Set entity_category for standby_switch
* Set default entity_category for numbers
* More housekeeping
* Add run request tracking
* Fix time remaining calculation
* Use native unit_of_measurement for run duration numbers
* Unstack some ifs
Keith Burzinski