reiplementing MQQT networking protocol in C for educational purposes
sources: https://docs.oasis-open.org/mqtt/mqtt/v3.1.1/errata01/os/mqtt-v3.1.1-errata01-os-complete.html#_Toc442180841 https://codepr.github.io/posts/sol-mqtt-broker/
mqqt.h defines some functions as well as defines the packets that are sent between client and server mqqt.c is to be implemented pack.h and pack.c both create helper packing functions