User can edit start/stop time of the time entry

[matijaSos]

I did an initial investigation on how to do this here: https://twitter.com/MatijaSosic/status/1764616013281456554

Some potentially useful links I found:

• https://hackernoon.com/the-headless-ui-date-picker-for-react-apps
• https://github.com/rehookify/datepicker
• https://github.com/aliakbarazizi/headless-datepicker
• https://github.com/its-danny/use-lilius
• https://github.com/msnegurski/tailwind-react-datepicker
• https://twitter.com/jrgarciadev/status/1764480382076895310

[matijaSos]

• [x] show a date and time picker
• [x] user can select a different starting date
• [ ] user can change start and stop time (by typing in the input field)