Support time-based date arithmetic in expressions #10826
Description
T26150 - Feature request: Support hour/minute addition in SurveyJS expressions
https://surveyjs.answerdesk.io/internal/ticket/details/T26150
Current expression functions do not support adding hours, minutes, or seconds to date values.
Functions such as dateAdd() only work with date-level units.
Suggestion: Add native support for time units in expressions, for example:
dateAdd(currentDate(), 30, "minutes")
Alternatively, introduce a dedicated function:
addTime(date, value, unit)
Where unit supports hours, minutes, and seconds.