Move mc decompile source to its own folder

Makes caching easier, ever so slightly more organized.

scripts/importmcdev.sh

@@ -9,7 +9,7 @@ basedir="$(cd "$1" && pwd -P)"
 
 workdir="$basedir/work"
 minecraftversion=$(cat "$workdir/BuildData/info.json"  | grep minecraftVersion | cut -d '"' -f 4)
-decompiledir="$workdir/$minecraftversion"
+decompiledir="$workdir/Minecraft/$minecraftversion"
 
 export importedmcdev=""
 function import {