Checks.cs initially started out small, but over the years it has grown
to handle multiple types of checks. With all these checks next to
eachother, it's hard to see the overall groups. Splitting them up
(potentially further?) allows for more focused maintenance &
understanding.
Not sure if I'm happy with the overall bandaids used (checks no longer
done within LegalityAnalysis so variable repointing is excessively
used), but I'm happier the way it is now compared to the huge Checks.cs
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.
