Configurable block fall damage modifiers

[MelnCat]

This allows the block fall damage modifiers (distance and damage) to be configured.
For example, a configuration of

  block-fall-multipliers:
    minecraft:granite:
      distance: 10
    minecraft:oak_leaves:
      damage: 10
    minecraft:obsidian:
      damage: 100
      distance: 0.1

Causes falling (or jumping) on granite to act as if you've fallen 10x that distance, and increases the damage taken to be the damage taken if you've fallen 10x that distance.
Falling on oak leaves will increase damage by 10x, and obsidian will increase damage by 100x, but cause effective distance to be 10x less.

[frog-commits]

all good, was just curious ☻