Adding categories/folders

[azomDev]

I think it would be nice to be able to create new tabs/categories/folders to separate some tasks, something similar to google tasks.

If it's good I can even try to do it myself in a fork, then open a pull request :P

[boredcodebyk]

Don't worry about it, I'm already working on it https://github.com/boredcodebyk/minttask/issues/4#issuecomment-1784835625

And should be finish within next month. Please refrain from making any pull request because I'm afraid there will be conflicting changes.