* Revises legality checks to account for traveling between the three game islands (PLA/BDSP/SWSH)
* Adds conversion mechanisms between the three formats, as well as flexible conversion options to backfill missing data (thanks GameFreak/ILCA for opting for lossy conversion instead of updating the games).
* Adds API abstractions for HOME data storage format (EKH/PKH format 1, aka EH1/PH1).
* Revises some APIs for better usage:
- `PKM` now exposes a `Context` to indicate the isolation context for legality purposes.
- Some method signatures have changed to accept `Context` or `GameVersion` instead of a vague `int` for Generation.
- Evolution History is now tracked in the Legality parse for specific contexts, rather than only per generation.
Relocate the SetRandomEC at the tail end of the generator into the specific classes that set EC, so that our correlation generators don't have their EC overwritten at the end.
Move form-info logic from FormConverter to AltFormInfo; now FormConverter is entirely form=>string[]
Add a bunch of xmldoc
Make pogo no-end-date cmp agaisnt UTCnow rather than local now.
EncounterTrade: don't init Location to -1; keep as default 0 and use that as the pivot for default met location. Move Fateful property to the sub-type that uses it (EncounterTrade4, for Ranch).
Move some EncounterStatic->PKM logic that is per-type to the associated type overloaded methods. Rearrange order of properties to be more consistent with interfaces
Gen3: Initialize some classes without using post-constructor setters. The `init` setter functionality coming in c#9 won't be usable as the net46 runtime/netstandard2 doesn't support it on current previews. Do it this way so we can explicity initialize some required properties rather than apply version on a second iteration.
