Split output into 0d, 1d, 2d files
Followup to !116 (merged)
This PR allows one now to output different variables in 0d, 1d and 2d format. We don't have implemented the options for different output timings per dimensions, should be done elsewhere.
This PR removes the parameters
enable0d/1d/2d
variables
New parameters are
variables0d/1d/2d