Remove Recipes from JEI

[WaitingIdly]

changes in this PR:

• add a general keybind folder.
• extract the Groovy reload keybind to that folder.
• add a remove recipe key (default: CTRL+X).
• add a few new methods to the GroovyScriptCodeConverter
  • format resource location.
  • format itemstack or fluidstack without quantity.
• add some new minor accessors for JEI.
• add a mechanism to obtain a number of removal methods for the focused category in JEI.
  • 255 total implementations
  • documented

not currently finished. things not yet solved:

• generation of some removal methods generates methods that dont exist/are otherwise incorrect.
  • went through most of the categories, most should work properly.
    requires going through every category and checking, and either doing .input("newName").output("newName") or creating new methods.
  • disabled line, should be reenabled in a later PR when the method is added.
    creation of the removeByExactInput method or commenting out the relevant line (currently line 54 of OperationHandler).
• should have a better way to iterate through all registries.
• add comments // todo jei to indicate that new methods need to be created for the given compat.
  current count: 15.

primary files to review: IJEIRemoval, JeiRemovalHelper, OperationHandler, and RemoveRecipeKey.
for more advanced implementations of the Operation logic, see IJEIRemovalGas, Crafting, ArcFurnace, and StarlightAltar.