Function setWeekendRange

setWeekendRange(
    schedule: number[],
    startHour: number,
    endHour: number,
    value: number,
): number[]
Sets the same time range for weekend days (Saturday-Sunday).
Parameters
- schedule: number[]
  The schedule array to modify.
- startHour: number
  Starting hour (0-23).
- endHour: number
  Ending hour (0-24, exclusive).
- value: number
  Value to set (0=OFF, 1=Economy/Power1, 2=Comfort/Power5).
Returns number[]
- The modified schedule array.
Example
```
// Set weekends 09:00-22:00 to Comfort (2)
const schedule = createEmptySchedule();
setWeekendRange(schedule, 9, 22, 2);
```
- Defined in library.ts:1151