`Moveset` struct stores 4 moves, and exposes methods to interact with a moveset.
`IndividualValueSet` stores a 6 IV template (signed).
Performance impact:
* Less allocating on the heap: Moves - (8 bytes member ptr, 20 bytes heap->8 bytes member)
* Less allocating on the heap: IVs - (8 bytes member ptr, 28 bytes heap->8 bytes member)
* No heap pointers, no need to jump to grab data.
* Easy to inline logic for checking if moves are present (no linq usage with temporary collections).
End result is faster ctor times, less memory used, faster program.
The Hexagon Brothers can be rematched in Phenac City if their shadows aren't snagged at the Cipher Lab, but Seedot, Houndour, Gulpin, and Spheal are all encountered outdoors (Phenac City (XD) [100]). Mareep and Baltoy are both encountered downstairs in the Mayor's House (Phenac City (XD) [096]).
Relevant .xk3 files: https://cdn.discordapp.com/attachments/537784151970021376/880816626176495626/Phenac_Rematches.zip
