nabu.app: Full-field pipeline

This PR aims at addressing #112 (closed).

To do:

• Support end-to-end reconstruction, from radios read to final NXResult
• Logging
• Numpy backend
• Cuda backend
• Support class that can run the same process on a different chunk
• Support binning
• Support datasets where delta_z * n_x * n_angles > memory
• Update documentation and wiki, delete Component.
• Update CLI scripts

Will be done in another PR:

• Dump memory (ex. sinograms)
• Re-run pipeline from memory dump / intermediate step