fix: multiple commands support in a single request

[raashidanwar]

trafficstars

Added support for cannot multiple commands in a single request.

Fixes https://github.com/DiceDB/dice/issues/1415

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}