- triangle/quad/sphere tests: Update to use new Initialize signature with OpenGLDevice*
- triangle/quad/sphere tests: Use GetGLContext() for RenderDoc SetDevice
- triangle/quad/sphere tests: Add wglMakeCurrent in render loop
- triangle/quad/sphere tests: Update capture timing to frame 25-35
- unit test fixture: Add GetDevice() method
- unit test swap_chain: Update to use new Initialize signature
- Add VertexAttributeType and VertexAttributeNormalized enums in OpenGLVertexArray.h
- Add ToGLAttributeType() converter in OpenGLVertexArray.cpp
- Remove glActiveTexture() call from quad test (already handled by texture.Bind())
- Remove #include <glad/glad.h> from triangle test
- Update unit tests to use encapsulated enums
All three OpenGL integration tests (minimal, triangle, quad) pass with 0% pixel difference.
