feat: add t5 gfxlight dumper and loader

src/ObjWriting/Game/T5/LightDef/LightDefDumperT5.cpp

@@ -0,0 +1,25 @@
+#include "LightDefDumperT5.h"
+
+#include "LightDef/LightDefCommon.h"
+
+using namespace T5;
+
+namespace light_def
+{
+    void DumperT5::DumpAsset(AssetDumpingContext& context, const XAssetInfo<AssetLightDef::Type>& asset)
+    {
+        const auto* lightDef = asset.Asset();
+        const auto assetFile = context.OpenAssetFile(GetFileNameForAsset(asset.m_name));
+
+        if (!assetFile || lightDef->attenuation.image == nullptr || lightDef->attenuation.image->name == nullptr)
+            return;
+
+        auto& stream = *assetFile;
+
+        const auto* imageName = lightDef->attenuation.image->name;
+        if (imageName[0] == ',')
+            imageName = &imageName[1];
+
+        stream << lightDef->attenuation.samplerState << imageName << static_cast<char>(lightDef->lmapLookupStart);
+    }
+} // namespace light_def