TEST TEST: QPainter test for internal use only

[pbergeron-adsk]

This is a test PR for the team to evaluate the possibility of rendering overlays on top of the GLView using QPainter as opposed to OpenGL.

Linked issues

SG-xxxxx

Summarize your change.

Two changes:

• Support QPainter/QPainterPath, and missing QPen from having bindings
• Create a new rendering path, After paintGL() has completed, to draw overlays again but with QPainter
• Added a test crosshair in the HUD's (i) command to see if it works.
• it works!

Describe the reason for the change.

Internal reasons.

Describe what you have tested and on which operating system.

macOS.

Add a list of changes, and note any that might need special attention during the review.

If possible, provide screenshots.