Minimal example of what is required to make a console command

HelloWorld.cpp

#include "HAL/IConsoleManager.h"

#if !UE_BUILD_SHIPPING
static FAutoConsoleCommand HelloWorld(
	TEXT("hello.world"),
	TEXT("Print Hello, World! to the console log"),
	FConsoleCommandDelegate::CreateLambda([](){
		GLog->Log(TEXT("Hello, World!"));
	})
);
#endif