Adds debug draw point

[TyGrze]

Problem

closes #4133
"[Request]: DebugDraw.DrawPoint() method to draw a point in 3D space"
See that post for more info.

Solution

Copies DebugDraw::DrawCircle
Removes normal param and uses a normal calculated from the cameras LastViewPosition
Builds a filled disc as a triangle fan from the center over the transformed unit circle points

Testing

• Built the editor (Linux x64, Development).
• Edited cpp scipt in one of my projects to use both the Debug::DrawPoint and macro DEBUG_DRAW_POINT

DebugDraw::DrawPoint(TurretBase->GetPosition(), 15.f, Color::Red, 0, false);
DEBUG_DRAW_POINT(TurretBase->GetPosition() + (Vector3::Up * 20.f), 25.f, Color::Green, 0.1f, true);

• Used multiple colors, radiuses, durations, and depth option
• Confirmed the rendering looked correct from all angels.