chore: Reduce webgl module imports

[ibgreen]

For #7457

Background

• Goal is to remove all direct access to the WebGL module

Change List

• Replace readPixels import with new device method
• For now, the new Device method only works on WebGL but at least let's us break the import dependency.

Most of the remaining imports related to GLParameters. We could offer similar methods on the device (e.g. device.setGLParameters()) to remove those.