Improve reconstruction from sino

This PR mainly rework the reconstruction to apply paganin to that.

• Use nabu backprojection and log normalization
• Added backend input to select a specific nabu/silx
• Added deltabeta input to tune the paganin filter
• Added basic unit test coverage
• Added tomovis-sinogram-reconstruction app, to allow to test manually the task into a scan file
• Changed sleep_time to optional
• Changed estination_rotation_position to only compute it if needed (this takes 6s -> more than the reconstruction time)
• Changed result array storage to float16

Before/after