Add new ContainsList validator

[AlexisSouquiere]

This PR adds a new validator "ContainsList". It checks that a field contains all the items from a list.
It helps in our case to prevent users from creating connectors on some topics by adding this validator to the topic.blacklist field.

  connectValidator:
    validationConstraints:
      topic.blacklist:
        validation-type: ContainsList
        mandatoryStrings:
            - ns1.topic1
            - ns1.topic2

Expected value

    topic.blacklist: ns1.topic1,ns1.topic2,ns1.otherTopicToBlacklist

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[AlexisSouquiere]

I will submit a PR to update the kafkactl readme once merged

[loicgreffier]

@AlexisSouquiere Looks good to me