Add support for ".vol" output

This MR is (almost) a cherry-pick from !248 (merged)

To do

• Add .vol to user interface (config file, ProcessConfig, etc)
• Update WriterManager (2023.1 branch)
• End-to-end reconstruction tests

This comes with two bonus bug fixes:

• Fix CoR on halftomo when CoR on the left
• Fix big-tiff / .vol not overwritten