- enhanced CustomCommand logging
- print ParseError

- created new telnet library ciUE
- using X-macro defined NR_UE_L2_STATE string array to get UE sync state
- add telnet CI to nrUE container

- this change simplifies the enum definition and makes it easier
  to add, remove, or modify states in the future
- the states are now defined in the NR_UE_L2_STATES macro,
  and the enum members are generated automatically from this macro

Add AWGN channel with some noise and additional path loss.

The next commit adds channel emulation in RFsim, so we have to reduce
the iperf, as the machine might not be fast enough.

- allows for simplification of the log collection in SA-2x2 pipeline
- ci-scripts/Jenkinsfile-nrue can be reused
- to be tested!

- Note: "version" parameter reported as obsolete by docker version > 25.0.5

Delete small pieces of dead code