Add Everness sandstone compressor recipes

[gabriel1379]

Hi,

As previously, I wanted to use more Everness stuff with Technic and would like to contribute this too. This time, it's about sand to sandstone and vice versa, using the compressor and the grinder.

I also did a minor refactoring to prevent unnecessary file bloating and preserve overviewability.

Lastly, I needed to add everness as an optional dependency after all, as without it, the default everness mineral_sandstone to mineral_sand recipe could not be cleared. (This should be OK though, as Everness is a more fundamental, world builder mod, while Technic is more for later game, so it shouldn't need to depend on Technic.)

[SmallJoker]

Looks good; the sand recipes are (still) removed as intended.

Will merge in a few days unless anyone's got objections.