update nuget

Merge branch 'master' of github.com:architdate/PKHeX-Plugins

Update nuget

update resources and credits

credit flaticons in readme and add icons for new features

Add c#8 and enable nullable checks

PKHeX.Core already enabled nullable checks so things were pretty easy to
trickle up a null.

Remove WasEgg setters

useless & setter was removed from latest pkhex.core commits

Update pkhex.core w/updated method sig

Closes architdate#12

API legality sets AVs to 200 automatically

reset gender before fixing it

Fix bruteforce path