🎨 Update Default Values for VIM WebGL viewer and PBI Custom Visual

[mavimaec]

TODO

Use the following default values for...

Material Color: #999999
Skybox Color: #E6F4FA
Ground Color: #DFDFE1
Sharpness: 2
Sun Light 0 Color: #FFFFFF
Sun Light 0 intensity: 0.8
Sun Light 0 Follow: On
Secondary Light Color: #FFFFFF // probably rename this to "Sun Light 1 Color" for consistency
Sun Light 1 intensity: 0.2
Sun Light 1 Follow: On

• The VIM WebGL viewer/component
• The PBI Custom Visual