On Screen Keyboard Raspberry Pi Integration

**Is your feature request related to a problem? Please describe.**
With the new Raspbian OS update having a better integrated on screen keyboard, it would be nice to have the ability to use it for text/int inputs. Right now, even with the keyboard forced on for all text inputs on the OS, the keyboard does not pop up when in a full-screen dpg window.

**Describe the solution you'd like**
Either a boolean to set during program setup or a callback to initialize the on screen keyboard is needed or wanted.

**Describe alternatives you've considered**
I have tried to look at forcing the on screen keyboard but I cannot see anything new that would work with the certain situation I have.

**Additional context**
I am happy to get screenshots if you'd like but I feel as though the ask is pretty straight forward. Whether that makes it easy to implement is another story. I would love to help out when possible as well for beta testing or anything.

Thanks!