* 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.
Future-proofing. We know that Hisuian Zoroark is in SV, as well as Petilil, so if Hisuian Lilligant is also present, we need to not show Lady Lilligant in the form dropdown for those games.
Also only show Primal Kyogre/Groudon for Gens 6/7 (can be revised later if they come back in SV).
