all usages besides fetching a 32bit random value should use rand.next
remove unnecessary do-while loop for calculating random EVs (always
returns 510 in total)
continued simplification
core.cs is pretty much the following:
misc one-off junk
moveset fetch
encounter table fetch
evo chain fetch
might eventually move things around a bit further for cleanliness so
that misc meta junk is the only thing that remains in core.
amount of pkm obj classes is pretty high, move the static utility
classes to another folder
breaks usage of pkm.ShowdownText; removes a dependency from PKM.
