Trainerproc: Support Ogerpon

[mrgriffin]

No description provided.

[hedara90]

It might be out of scope for this PR, but here's how it behaves on Showdown.

• If the base name is used, but it's holding a mask, it'll be treated as the form corresponding to the mask.
• If the ability is incorrect for the form, it will error.
• If the Tera type is incorrect for the form, it will overwrite it with the correct type.
• If a form is specified by the name, and it's not holding the corresponding mask, it will error.

As it is right now everything works, but developers will have to be responsible for using correct forms with masks.
Approving unless you think this is in scope.

[mrgriffin]

So to confirm, everything works fine but Showdown has some additional checks and raises errors if the user specifies a combination of form/mask/Tera type that isn't legal? I think we're probably okay not to have those—I suppose a hack creator might actually want to have an Ogerpon with an "illegal" Tera type.

[kittenchilly]

I believe an illegal tera type on Ogerpon won't even work due to how we code it, it'll always use the tera type tied to the form