* Move pkhex.drawing calls out of form constructors
designer doesn't like it; if Main can't be designed then there's some
call that it can't process for whatever reason
* Add netcore3 targeting
Closes#2198 by adding a netcore3 build option
Closes#2391 by retaining designer functionality and net46 builds
Properly handle egg hatch counters for generated mystery gifts, as well
as HT friendship for gen6+
fetch form specific (friendship doesn't change but abilities fetch
species specific data later, so just fetch once up front). Do not depend
on save file as SAV7 importing PGF may have different abilities
allocated
Pad buttons for folder popup
fix double Japanese/International error message for importing jpk1<->pk1
Closes#1137
allows loading of tab separated value text file "savpaths.txt" which can
also be used to 'favorite' locations (ie, the program checks for
duplicate paths and only adds the first).
folder availability checked on form creation
shortcut: press ctrl-F on main window
Thanks @sora10pls !
