Start and Due Date picker in Task Detail Modal

[adisreyaj]

Is your feature request related to a problem? Please describe.
Tasks can have a start and end date for time tracking. Can later be used to display projects/tasks in a calendar view or to notify users about the due dates

Describe the solution you'd like
A date picker needs to be implemented in the project which goes with the overall aesthetic of the project. A start and end date picker need to be added to the Task Detail Modal component.

Additional context
The task model already has the start and end dates added, so I the API level there is no change required.