Add documentation for CI Jobs Failure Analysis in CI Visibility

[drodriguezhdez]

What does this PR do? What is the motivation?

Add the documentation related to the new feature in CI Visibility called "CI Jobs Failure Analysis"

Merge instructions

Merge readiness:

• Ready for merge

Merge queue is enabled in this repo. To have it automatically merged after it receives the required reviews, create the PR (from a branch that follows the <yourname>/description naming convention) and then add the following PR comment:

/merge

Additional notes

[github-actions]

Preview links (active after the build_preview check completes)

New or renamed files

• https://docs-staging.datadoghq.com/drodriguezhdez/add_public_docs_log_summarization/continuous_integration/guides/use_ci_jobs_failure_analysis

Modified Files

• https://docs-staging.datadoghq.com/drodriguezhdez/add_public_docs_log_summarization/continuous_integration/guides/
• https://docs-staging.datadoghq.com/drodriguezhdez/add_public_docs_log_summarization/continuous_integration/pipelines/
• https://docs-staging.datadoghq.com/drodriguezhdez/add_public_docs_log_summarization/continuous_integration/pipelines/github
• https://docs-staging.datadoghq.com/drodriguezhdez/add_public_docs_log_summarization/continuous_integration/pipelines/gitlab
• https://docs-staging.datadoghq.com/drodriguezhdez/add_public_docs_log_summarization/continuous_integration/search/

[joepeeples]

I only had time today to do a partial review. I'll finish up with the larger files tomorrow!