Add 'mqtt' and 'anomaly' Suricata schema types

[satta]

📔 Description

Adds schema support for the Suricata mqtt and anomaly event types.

📝 Checklist

• All user-facing changes have changelog entries.
• The PR description contains instructions for the reviewer, if necessary.

🎯 Review Instructions

Double-check format and formatting.

[dominiklohmann]

Thanks for this PR! 🙏

I just have some minor change requests. Also, please run the integration tests with -u (e.g., sh path/to/build/integration_Debug.sh -u) to update the reference files, or update the reference file for the dump command manually.

[dominiklohmann]

Merging despite the CI failure; it is unrelated to this PR.