Add undo functionality

[riodelphino]

Is your feature request related to a problem? Please describe.
Currently, once the task is modified, we cannot undo it.
The modifications are permanent. So, accidental key operation might break the tasks data.
(I've already experienced it 😂)

Describe the solution you'd like
Add undo functionality.

• Record undo history internally.
• Add undo function
• Add shortcut key for it (e.g. u key)

Additionally (If possible):

• Add undo-history popup. (It would be better to be able to select the undo-point from the list.)
• Add shortcut key for it (e.g. U key ?)
• Redo !!

[programmersd21]

will do in next update!

[riodelphino]

Thanks!
Redo is also needed !

[programmersd21]

Thanks! Redo is also needed !

ikr

[programmersd21]

uhh this is hard bro

[programmersd21]

lemme try my best

[programmersd21]

video.mp4

see im working on it, currently the keybinds are not functioning right

[programmersd21]

i can do it, but for tasks only as of now if i try my best... this is the biggest feature ever in the history of kairo, so i got to be careful and delicate abt this