Generate detailed setpoints

[rajeee]

Pull Request Description

Generate detailed setpoints from the schedule generator. Ensure that the setpoint follows the exact same values as the existing weekday/weekend setpoint schedule. This is in preparation of load flexibility analysis that will need to modify the setpoints.
This PR also simplifies the handling of the offset period. Instead of providing offset schedule for each shifting (+5 hour to -5 hour), ResStock only needs to pass the shift hours. Shifting can also be set to "auto" which will result in random shifting of +-5 hours, further simplifying the workflow.

Checklist

Not all may apply:

• Tests (and test files) have been updated
• Documentation has been updated
  • If related to resstock-estimation, checklist includes data dictionary, source report, options saturation, options_lookup.
• Changelog has been updated
• openstudio tasks.rb update_measures has been run
• No unexpected regression test changes on CI (checked comparison artifacts)

[shorowit]

I was reminded of @joseph-robertson's similar PR here. How is this different?

[rajeee]

I was reminded of @joseph-robertson's similar PR here. How is this different?

I think it's similar goal. That PR is quite old now though and possibly cannot be merged. I am going to close this PR too - have opened one in OS-HPXML instead: NatLabRockies/OpenStudio-HPXML#1726 and will later have the supporting PR in ResStock.