Supports cloning battles for AI purposes.

src/Battling/Pokemon/PokemonParty.hpp

@@ -10,10 +10,23 @@ namespace PkmnLib::Battling {
             : CreatureLib::Battling::CreatureParty(std::move(party)) {}
         PokemonParty(std::initializer_list<CreatureLib::Battling::Creature*> party)
             : CreatureLib::Battling::CreatureParty(party) {}
+        PokemonParty(size_t size) : CreatureLib::Battling::CreatureParty(size) {}
 
         ArbUt::OptionalBorrowedPtr<Pokemon> GetAtIndex(int index) const {
             return CreatureLib::Battling::CreatureParty::GetAtIndex(index).As<Pokemon>();
         }
+
+        CreatureParty* Clone() const override {
+            auto party = new PokemonParty(GetParty().Count());
+            auto i = 0;
+            for (auto c : GetParty()) {
+                if (c != nullptr) {
+                    party->SwapInto(i, c->Clone());
+                    i++;
+                }
+            }
+            return party;
+        }
     };
 }