Support reading bool GMST by ESM4

components/esm4/loadgmst.cpp

@@ -15,6 +15,12 @@ namespace ESM4
             const char type = editorId[0];
             switch (type)
             {
+                case 'b':
+                {
+                    std::uint32_t value = 0;
+                    reader.get(value);
+                    return value != 0;
+                }
                 case 'i':
                 {
                     std::int32_t value = 0;

components/esm4/loadgmst.hpp

@@ -13,7 +13,7 @@ namespace ESM4
 
     struct GameSetting
     {
-        using Data = std::variant<float, std::int32_t, std::string>;
+        using Data = std::variant<bool, float, std::int32_t, std::string>;
 
         FormId mFormId; // from the header
         std::uint32_t mFlags; // from the header, see enum type RecordFlag for details