Fixed TimeFrame SMMA

A script for SMMA calculated on fixed timeframe, different from the main chart's timeframe.

As it's known, we can't use mutable variables with security. At the same time, SMMA references to the previous values. So it's impossible to create SMMA on different timeframe, just passing a variable with SMMA to security.
To overcome this restriction, we should use a function, which calculates SMMA and we are passing the function to the security, so the function will be calculated on required timeframe.