Add item scale factor parameter

[Oubi256]

I didn't like that I can't change the default icon scale after clicking. Now it can be specified. 1 - the scale is twice the standard size (default behavior), 0.5 -scale half of the standard, etc.

[vizhan-lanars]

Hi. Thanks for your contribution. We are not consider making that property customisable. But you can fork for your needs.

[canaan5]

This is wrong.

by default it should be customisable. I really don't like the scale on tap but I see that my options are to build my own or for this project to make the adjustments. Hmmmm

[vizhan-lanars]

Hi, @canaan5 @Oubi256 Please check version 1.3.0 with a new scaleFactor parameter.

[canaan5]

Thank you so much @vizhan-lanars, this is perfect.