+1 to this as well!
I spent a lot of time trying to figure out how to make own Automation script but working from the project directory not the engine directory:
After scrapping the dark depths of source code I found out that to make this work for the project you just need to add -ScriptsForProject= argument to the RunUAT. The argument which is not mentioned basically anywhere.
I know this is something niche to do, so it’d be even better option to allow crazy developers who pick up such little nuances to add pull requests to the documentation somehow 