Load script prior to commands execution on Redis

[himadieievsv]

Summary
Load LUA script prior to commands execution on Redis.
Initialization can be done when object created once per application.

Motivation
All Redis backends are sending LUA scripts as is. Those calls ending up with slitty bigger size.
Reduce that redundancy with using script hash to call it.

Caveats

• Tracking what Redis instances already has scripts might be challenging if cluster topology changes or individual instance get restarted/replaced.