Adds Angelscript function to change forme.

src/ScriptResolving/AngelScript/TypeRegistry/Battling/RegisterPokemonClass.cpp

@@ -203,6 +203,11 @@ void RegisterPokemonClass::RegisterPokemonType(asIScriptEngine* engine) {
                                      asMETHOD(PkmnLib::Battling::Pokemon, SetStatus), asCALL_THISCALL);
     Ensure(r >= 0);
 
+    r = engine->RegisterObjectMethod(
+        "Pokemon", "void ChangeForme(const constString& name)",
+        asMETHODPR(PkmnLib::Battling::Pokemon, ChangeVariant, (const ArbUt::StringView&), void), asCALL_THISCALL);
+    Ensure(r >= 0);
+
     r = engine->RegisterObjectMethod("TypeLibrary",
                                      "float GetEffectiveness(uint8 attackingType, Pokemon@ defender) const",
                                      asFUNCTION(GetEffectivenessHelper), asCALL_CDECL_OBJFIRST);