added fs utility functions

modules/lib/fs.lua

@@ -70,4 +70,24 @@ do
   end
   return false
  end
+  function fs.list(s)
+  local _,d,p = fs.resolve(s)
+  return fT[d].list(p or "/")
+ end
+ function fs.mkdir(s)
+  local _,d,p = fs.resolve(s)
+  return fT[d].makeDirectory(p or "/")
+ end
+ function fs.rm(s)
+  local d,p = fs.resolve(s)
+  return fT[d].remove(p)
+ end
+ function fs.exists(s)
+  local d,p = fs.resolve(s)
+  return fT[d].exists(p)
+ end
+ function fs.isdir(s)
+  local d,p = fs.resolve(s)
+  return fT[d].isDirectory(p)
+ end
 end