Improvement/Support JSON log output

[blotus]

We use logrus to handle all of crowdsec logs. As logrus natively supports a JSON formatter, we should allow users to configure which output format they want (either plaintext or JSON).

[nanikjava]

@blotus is the log configuration only for crowdsec or including the cli ?

[LaurenceJJones]

@nanikjava To answer your question it would be crowdsec agent itself than the CLI since the cli already support -o json flag

[sharkymcdongles]

This would be a nice feature to have because structured logging is quite important for a security tool.

[ScreNN]

I support the idea

[victoredvardsson]

This improvement will be added with this one https://github.com/crowdsecurity/crowdsec/pull/2941