Shortcut widget to quickly modify a setting item

[MuntashirAkon]

A shortcut widget would greatly help user quickly modify a setting without opening the app itself.

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This feature was requested via email

[ferreol-fr]

Hi MuntashirAkon
My fork : SetEditPlus is now near ready.
It adds the ability to create shortcuts for automation, with the ability to edit and modify.
I've done this with my spare time, for learning Android development environment.
I am conscious that this application, and especially mine, is dangerous and potentially catastrophic for an uninformed user.
I may have taken the liberty, more than I should have, to modify your code. Sometimes it was to fix Android Studio warnings, but mostly to make the code more readable for me.
I would really appreciate it if you could take a look at what I have done, and give me your opinion.

[MuntashirAkon]

Thanks. I'll look into it in my free time. If you think you've done a good job, consider opening a pull request to this repo so that the feature can be included in this app.