feat: add end task field to add task panel

[Neeraj-gagat]

Description

Added end date field in the addtask panel
for both backend and frontend

after adding multiple fields layout of addtask was broken it was going out of display also fixed it and added scroll to it

• Fixes: Add more Fields to the Add Task Panel #188

Photo

[github-actions]

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[Neeraj-gagat]

Done with the self review it works fine and nothing breaks and passes all test cases