[Feature Request] Spell Range calculation

[RubenatorX]

Resources lib probably ought to convert the dat value to a usable distance using the following data collected from the client code:
https://gist.github.com/z16/a7700d83c8d94b82e742

context: https://discordapp.com/channels/338590234235371531/566275097753813013/716397336330502185

Also please fix for v4:
Windower/Lua#1880