Add per-map recipe sorting #36

A potentially nice enhancement would be allowing each RecipeMap to specify its own sort ordering, rather than a global sort applied on a single value.

For example, the EBF tab could have its recipes ordered by heat followed by EU/t, to group recipes by required coil tier. SoG could also use it to sort fusion recipes by energy-to-start.

One caveat is that, assuming I wanted to use the EU/t sort to optimize recipe lookups or something, such sorting would affect that; it would become necessary to apply such sorts to a shallow-copy of the recipe list to pass to JEI rather than the actual recipeList itself.