Edit command

### Elevator pitch: Edit command
A command which allows the user to edit a task.

_Example: Add created/due by timestamps to tasks._

### Describe how this new feature adds value to the application
Especially for the label issue this is very important. Then I dont want to delete and to add the same task in order to change the label.

_Example: Allows users to see the current age of a task, when it was created and when it is due by._

### Describe suggested implementation
Some possibilities
- edit [id] [description] [label] e.g edit 2 -i "important" (-i -> used for property which dont need to be edited)
- edit [id] [property] [value]

### Additional context
Add any other context or screenshots about the feature request here.