Add shader hint template

Common.bt

@@ -16,12 +16,20 @@ typedef struct
 
 string StringRead(CString &str)
 {
-    return str.text;
+    if (exists(str.text)) {
+        return str.text;
+    }
+
+    return "";
 }
 
 string StringReadFixed(CStringFixed &str)
 {
-    return str.text;
+    if (exists(str.text)) {
+        return str.text;
+    }
+    
+    return "";
 }
 
 typedef char FourCC[4] <fgcolor=cLtGreen>;

Run.bt

@@ -31,6 +31,7 @@ if (!exists(isDKCTF)) {
 #include "CUniverseInfo.bt"
 #include "CVectorField.bt"
 #include "MessageTable.bt"
+#include "NShaderHint.bt"
 // #include "CRuleSet.bt"
 #include "CGameAreaResource.bt"
 #include "CScaleformFlashLibrary.bt"
@@ -129,6 +130,9 @@ typedef struct {
   case "GUIF":
     CGuiFrame frame;
     break;
+  case "SHNT":
+    NShaderHint shaderHints;
+    break;
   }
   FSeek(start + form.size);
 } File<open = true, bgcolor = cSilver>;