Also set warnings to errors for Windows build, fix one of those warnings.

src/Battling/ScriptHandling/ScriptAggregator.hpp

@@ -11,10 +11,10 @@
 namespace CreatureLib::Battling {
     class ScriptAggregator {
         std::vector<ScriptWrapper> _scripts;
-        int _index = 0;
+        size_t _index = 0;
         bool _isSetSet = false;
         const std::vector<Script*>* _setScripts;
-        int _setIndex;
+        size_t _setIndex;
 
     public:
         ScriptAggregator(std::vector<ScriptWrapper> scripts) : _scripts(std::move(scripts)){};