[REQUEST] Better show where all the configuration should go

[Giszmo]

Pledge

I'd offer $20 in BTC or LN for this but it would help others much more than myself who already found stuff the hard way.

Is your feature request related to a problem? Please describe.

The relay hitting limits doesn't communicate well what's limiting it and which config to touch to fix that.

Describe the solution you'd like

• [ ] At startup, the relay should log out all the config files it is considering and using. If configs get merged, it should show the list and indicate which config overwrites which.
• [ ] When hitting limits it should hint at what to do. "db FATAL: sorry, too many clients already. Try increasing configs A, B and C inside the project folder's config files D, E and F if using docker. ..."

[cameri]

Should have split this into two requests because one is a feature and the other one is a bug fix.