Adds OnFaintingOpponent script hook to Angelscript.

src/ScriptResolving/AngelScript/AngelScriptScript.cpp

@@ -365,3 +365,11 @@ void AngelScriptScript::OnIncomingHit(const CreatureLib::Battling::ExecutingAtta
         ctx->SetArgByte(2, hitNumber);
     })
 }
+void AngelScriptScript::OnFaintingOpponent(const CreatureLib::Battling::ExecutingAttack* attack,
+                                           CreatureLib::Battling::Creature* target, u8 hitNumber) {
+    CALL_HOOK(OnFaintingOpponent, {
+        ctx->SetArgObject(0, (void*)attack);
+        ctx->SetArgObject(1, (void*)target);
+        ctx->SetArgByte(2, hitNumber);
+    })
+}