Removes all the old code that did the same thing as datalogistik, and now uses datalogistik.
A number of things still need to be changed for this to really work:
[x] datalogistik handle json
[ ] datalogistik to handle remote datasets
[ ] ~figure out what to do about fst~ we should punt on this for now — datalogistik almost certainly shouldn't know about fsts, but adding them in to the cache from arrowbench isn't really possible right now
Removes all the old code that did the same thing as datalogistik, and now uses datalogistik.
A number of things still need to be changed for this to really work: