Make allowed operations and allowed comparisons configurable in instruction config file

[LMH01]

See title.

TODO

• [x] Add more tests
  • [x] Check if data types left out of allowed instructions file are working (that they can be left out)
  • [x] Test if all operations/comparisons can be forbidden by providing an empty array
• [x] Update documentation
  • [x] How --allowed-instructions-file interacts with --allowed-comparisons and --allowed-operations (that operations/comparisons allowed are merged)
  • [x] That all values in instruction-config file can be null, to just limit a specific type
  • [x] Example file
• [x] (Decide how to) handle case when --allowed-instructions-file is provided where allowed comparisons and operations are set in and where --allowed-comparisons/--allowed-operations is provided as command line argument. I'd say that operations/comparisons are merged and if the are allowed in either file/command they are accepted.

[LMH01]

I'd say that the feature is ready for release.