Be able to set HTTPNodeAuth settings for a device agent

[hardillb]

Description

Either set these in the device.yml or push them down from the forge app.

If in the device.yml then the following needs to be taken into account https://github.com/FlowFuse/flowfuse/issues/4185

Which customers would this be available to

Everyone - CE/Starter/Team/Enterprise

Have you provided an initial effort estimate for this issue?

I have provided an initial effort estimate