Add mfs library

mfs/lib/mfs.lua

@@ -0,0 +1,22 @@
+local mfs={}
+
+function mfs.read(x)
+	local f=fs.open(x,"r")
+	if not f then return nil end
+	local i=f.readAll()
+	f.close()
+	return i
+end
+
+function mfs.write(x,v)
+	local f=fs.open(x,"w")
+	f.write(v)
+	f.close()
+end
+
+function mfs.mmkdir(x)
+	if not fs.exists(x) then
+		fs.makeDir(x)
+	end
+end
+