Added mutex locks on static variables such as static scope and userdata, that could be shared around threads

src/UserData/UserData.hpp

@@ -3,12 +3,14 @@
 
 #include <utility>
 #include <unordered_map>
+#include <mutex>
 #include "UserDataField.hpp"
 #include "UserDataOperation.hpp"
 
 namespace Porygon::UserData {
     class UserData {
         std::unordered_map<uint32_t, unique_ptr<UserDataField>> _fields;
+        std::mutex _mutex;
 
         // Binary operations
         UserDataBinaryOperation* _addition = nullptr;
@@ -62,6 +64,7 @@ namespace Porygon::UserData {
         }
 
         inline void CreateField(uint32_t fieldId, UserDataField *field) {
+            std::lock_guard<std::mutex> guard(_mutex);
             _fields.insert({fieldId, unique_ptr<UserDataField>(field)});
         }