Implements several new move scripts.

Scripts/Moves/Assist.as

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+#include "Utilities/CopyableMoves.as"
+
+namespace Gen7 {
+    [Move effect=Assist]
+    class Assist : PkmnScript {
+        void ChangeAttack(MoveTurnChoice@ move, constString &inout moveName) override {
+            auto user = move.User;
+            auto battle = user.Battle;
+            auto party = battle.FindPartyForPokemon(user).Party;
+            array<const MoveData@> possibleMoves;
+            for (int i = 0; i < party.Length; i++){
+                auto mon = party.GetAtIndex(i);
+                if (mon is null){ continue; }
+                auto moves = mon.GetMoves();
+                for (uint j = 0; j < moves.length; j++){
+                    auto m = moves[j];
+                    if (m is null){ continue; }
+                    if (CanCopyMove(m.MoveData)){
+                        possibleMoves.insertLast(m.MoveData);
+                    }
+                }
+            }
+            if (possibleMoves.length == 0){
+                // TODO: Log failure.
+                return;
+            }
+            auto i = battle.Random.Get(possibleMoves.length);
+            moveName = possibleMoves[i].Name;
+        }
+    }
+}

Scripts/Moves/CurePartyStatus.as

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+namespace Gen7 {
+    [Move effect=CurePartyStatus]
+    shared class CurePartyStatus : PkmnScript{
+        void OnSecondaryEffect(ExecutingMove@ attack, Pokemon@ target, uint8 hit) override {
+            auto user = attack.User;
+            user.ClearStatus();
+
+            auto battleParty = user.Battle.FindPartyForPokemon(user);
+            if (battleParty !is null){
+                auto party = battleParty.Party;
+                for (int i = 0; i < party.Length; i++){
+                    auto m = party.GetAtIndex(i);
+                    if (m !is null){
+                        m.ClearStatus();
+                    }
+                }    
+            }
+        }
+    }
+}