×10 steps, LongPress, more stylish, state updates textInput

[pooryamd]

I made customized it for my project and I want to contribute.

Here is my changes: 1- Adding ability to activate two more button for ×10 inc. and dec. functions. (fourButton boolean prop) 2- Adding LongPress function (all 4 buttons) 3- Fixing textInputs not updating with state value change 4- Some stylings to improve 4 button appearance.