Support for _FDC and Fsys NVRAM formats

- only one format remains - EVSA
- added scope to text search UI, because of NVRAM variables having texts
in headers

common/types.h

@@ -45,7 +45,10 @@ namespace Types {
         FreeSpace,
         NvramVariableNvar,
         NvramStorageVss,
-        NvramVariableVss
+        NvramStorageFdc,
+        NvramStorageFsys,
+        NvramVariableVss,
+        NvramVariableFsys
     };
 }