Go-NEB check configuration

[keachi]

Is your feature request related to a problem? Please describe.
Before running Go-NEB I'd like to check if my configuration is valid. Either I start Go-NEB (but I just want to check if the configuration is valid, not to start) or I can't check the config.

Describe the solution you'd like
Something like go-neb -config.check.

Describe alternatives you've considered
Starting Go-NEB and check the output and after kill the process.