Configures the `Kafka` custom resource to use simple authorization and define Access Control Lists (ACLs).

ACLs allow you to define which users have access to which resources at a granular level.

Strimzi uses Kafka's built-in authorization plugins as follows: 

* `StandardAuthorizer` for Kafka in KRaft mode 
* `AclAuthorizer` for ZooKeeper-based Kafka

Set the `type` property in the `authorization` section to the value `simple`,
and configure a list of super users.
Super users are always allowed without querying ACL rules.

Access rules are configured for the `KafkaUser`, as described in the xref:type-AclRule-reference[ACLRule schema reference].

.Example `simple` authorization configuration
[source,yaml,subs="attributes+"]
----
apiVersion: {KafkaApiVersion}
kind: Kafka
metadata:
  name: my-cluster
  namespace: myproject
spec:
  kafka:
    # ...
    authorization:
      type: simple
      superUsers:
        - CN=user-1
        - user-2
        - CN=user-3
    # ...
----

NOTE: The `super.user` configuration option in the `config` property in `Kafka.spec.kafka` is ignored.
Designate super users in the `authorization` property instead. 
