Add missing generator files?

Lua uses bin/generate-spec to generate test suites from the problem-specs canonical data for an exercise. However, 36 exercise folders are missing the corresponding .meta/spec_generator.lua for this tool. Three of those exercises are deprecated, leaving 33 missing generator files. Since the generator files can probably be tweaked in most cases to avoid breaking existing solutions, I think it’d be good to track these and add them over time. I can grab a few here and there as time permits to help out track maintainers.

  1. acronym
  2. all-your-base
  3. allergies
  4. alphametics
  5. armstrong-numbers
  6. binary-search-tree
  7. binary-search
  8. bottle-song
  9. bowling
  10. circular-buffer
  11. clock
  12. collatz-conjecture
  13. connect
  14. crypto-square
  15. custom-set
  16. darts
  17. diamond
  18. difference-of-squares
  19. dnd-character
  20. eliuds-eggs
  21. etl
  22. flatten-array
  23. food-chain
  24. gigasecond
  25. grains
  26. grep
  27. hello-world
  28. high-scores
  29. house
  30. knapsack
  31. largest-series-product
  32. leap
  33. matching-brackets

NOT NEEDED
accumulate (deprecated)
beer-song (deprecated)
binary (deprecated)