Feat: Added time remaining(deadline countdown) calculation for Date Cells

[ChiragKr04]

• Implemented a new function to calculate and return a human-readable string representing the time remaining until a specified date or how long it is overdue.
• Updated the DateCardCell widget to display the time remaining or overdue status, enhancing user feedback on date-related cells.

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#8205

Summary by Sourcery

Add time remaining calculation and visual countdown/overdue display to date cells

New Features:

• Calculate a human-readable countdown or overdue message for date cells
• Display time remaining or overdue status in the DateCardCell UI with contextual styling

[sourcery-ai]

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