[DOCS] Adds siem_cloudtrail module

[lcawl]

Related to elastic/kibana#71323

This PR adds the new jobs from the siem_cloudtrail module (https://github.com/elastic/kibana/tree/master/x-pack/plugins/ml/server/models/data_recognizer/modules/siem_cloudtrail) to the list of SIEM machine learning jobs in https://www.elastic.co/guide/en/machine-learning/master/ootb-ml-jobs-siem.html

Preview

• https://stack-docs_1270.docs-preview.app.elstc.co/guide/en/security/master/prebuilt-ml-jobs.html
• https://stack-docs_1270.docs-preview.app.elstc.co/guide/en/siem/guide/master/prebuilt-ml-jobs.html
• https://stack-docs_1270.docs-preview.app.elstc.co/guide/en/machine-learning/master/ootb-ml-jobs-siem.html

[blaklaybul]

Since we have a lot of jobs in SIEM, I think the SIEM jobs page could benefit from having the jobs listed by module, then alphabetically within each module.

This would create six subsections in the page, one for each module:

• SIEM Auditbeat
• SIEM Auditbeat Authentication
• SIEM Cloudtrail
• SIEM Packetbeat
• SIEM Winlogbeat
• SIEM Winlogbeat Authentication

This structure could also be carried over to the main OOTB modules list along wit the sidebar nav.

[lcawl]

Since we have a lot of jobs in SIEM, I think the SIEM jobs page could benefit from having the jobs listed by module, then alphabetically within each module...

I've drafted that change in #1275. The open question will be whether that grouping is still useful when this content is re-used in the Security Solution's docs. Hopefully yes!

[benskelker]

I've drafted that change in #1275. The open question will be whether that grouping is still useful when this content is re-used in the Security Solution's docs. Hopefully yes!

Yep - It'll help in the Security docs as well. Thank you.

[benskelker]

Adding @randomuserid to review the text of the new job descriptions.

[lcawl]

Thanks @benskelker and @blaklaybul, this PR now groups the Cloudtrail module into a separate section.