Force use opengl on windows

**Is your feature request related to a problem? Please describe.**
Can't run a dearpygui app on a windows 10 in a virtual machine (qemu) because it has no support directx 11.

**Describe the solution you'd like**
A way to config app to use of opengl on windows, so I can do alternatives like [Mesa on Windows](https://fdossena.com/?p=mesa/index.frag).

**Describe alternatives you've considered**
The support of directx on virtio driver is not ready [yet](https://github.com/virtio-win/kvm-guest-drivers-windows/issues/773)

The issue names no files, tests, or entry points. Start by locating DearPyGui’s Windows rendering initialization and the configuration boundary exposed to applications; done means a Windows app can select OpenGL instead of DirectX 11 and the behavior is covered by the project’s relevant checks.

Written by the indexing model from the issue text.