Target StatefulSet without copy_target.

[meowjesty]

• Issue: 544

1. Small refactor on the cli getting a list of (kube) resources;
2. Adds statefulset compliance to verify-config;

[aviramha]

Create an issue to check for new targets for after we finish the backward compatibility fixes with operator (jobs,cronjobs,statefulsets should be tested only when operator)

[Razz4780]

Only nits, needs rebasing though.

[Razz4780]

One more thing

[Razz4780]

Suggested change

	"{verified_target} target requires the mirrord-operator, but the config \
	was set to `operator: false`! Consider setting `operator: true` for \
	this target type."
	format!("{} targets require the mirrord-operator, but operator usage was explicitly disabled. Consider enabling mirrord-operator in your mirrord config.", verified_target.target_type())

Requires implementing VerifiedTarget::target_type(&self) -> TargetType and Display for TargetType but would be nicer, I think

[meowjesty]

Changed. I ended up impl'ing Into, wdyt?

[Razz4780]

Shouldn't this check be in LayerConfig::verify_config?

[meowjesty]

Do you mean in here pub fn verify(&self, context: &mut ConfigContext) -> Result<(), ConfigError>, instead of in the verify_config?