Infamy: add LLDP discover/client/scanner

[troglobit]

The test infix_services/services_basic.py is disabled due to it failing intermittently. It fails befcause sometimes LLDP packets are not received by the test.

https://github.com/kernelkit/infix/actions/runs/6021644894/job/16334888103?pr=124

To speed up the test, and remove any uncertainties we need an LLDP scanner class in Infamy. This in turn requires, at the very least, socat in the Docker image.

[troglobit]

New docker image, v0.7, with socat introduced in f58a726

[troglobit]

Dunno what I was smoking, but ChatGPT does not know how to write a script to scan for LLDP neighbors using socat. Only way to reduce the risk of the discover test failing (due to missing LLDP frames) is to increasedecrease the TX interval, e.g. using txFast.

[troglobit]

Replaced with #181