Datetime question type

[latin-panda]

Description

Implement the datetime question type (specs) to allow for the simultaneous capture of both date and time within a single widget.

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User Stories

• As a data collector, I want to record a specific date and time in one screen so that I can capture event timestamps more efficiently.
• As a researcher, I want date and time data to be stored in a standardized format to ensure temporal accuracy across different time zones.
• As a user, I want a clear interface that shows both the selected date and time to confirm the accuracy of the data before moving to the next question.

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Additional Notes

• The "no-calendar" support will be covered here: Implement a Date widget with spinner input #781

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Related Issues

• Epic: Add support for date question types #304