filter_radon with reflections

[roflmaostc]

Hi,

I see some issues that some pixels are turned off even though they are reachable by reflections.

But reading this, it seems that filter_radon should be able to handle proper reflections and keep pixels turned on?

https://github.com/rgl-epfl/drtvam/blob/main/src/drtvam/integrators/radon.py

[roflmaostc]

Ok it seems the init is not correclty done, so I will fix it.
I guess it makes sense to take transmission_only specified by the config file. Same for the `max_depth

[roflmaostc]

Not fixed yet