RGBA renderer for splatfacto

[hardikdava]

Users can now render rgba images with rendering cli

ns-render [camera-path,interpolate,spiral,dataset] --load-config config.yml --image-format png --rendered-output-names rgba

[hardikdava]

hello 👋 @jb-ye, can you review this PR? Thanks

[jb-ye]

LGTM

[ichsan2895]

What is the different between this PR and transparent carving?

[hardikdava]

@ichsan2895 This PR allows us to render images with transparent background using ns-render if model does not contain background then you can directly render images without background for all of the render related tasks.