[Bug] When mainmodule restarts, it does not close open Mosquitto processes

[ThomasTJdev]

This can cause many Mosquitto processes to run.

[ThomasTJdev]

Current: Mainmodules restarts from nimha.nim after an error Result: Started Mosquitto process is not closed = user ending with multiple Mosquitto processes running

Solution ?: nimha.nim quits after an error in a Mainmodule, and systemd restarts the whole program. Cons: User needs to use systemd