Find and add functions to match use cases

[rom1504]

See PrismarineJS/minecraft-data#14 (comment)

• powerful look up by display name : see https://github.com/Darthfett/helperbot/blob/master/lib/items.js#L14 and https://github.com/PrismarineJS/minecraft-data/blob/770d8e07de1609e36904e02af644130f61aa30f5/bin/wiki_extractor/lib/find_item_object_by_name.js : actually, that should be in bots or in a "natural language for minecraft" module or something
• checking every usage of minecraft-data can be replaced properly by a use of node-minecraft-data in :
  • helperbot
  • rbot
  • mineflayer

[rom1504]

Well I'm not entirely sure we really want the "powerful look up" thing here actually.

It's either going to not work in many cases or be really complicated (natural language does that.)

[rom1504]

Putting node-minecraft-data in mineflayer in place of minecraft-data allows removing the index in minecraft data json files without breaking mineflayer api compatibility !

That's a good enough use case.

[rom1504]

done