CSP reporting integration

[hestonhoffman]

See DOCS-3551

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Reviewer checklist

• [ ] Review the changed files.
• [ ] Review the URLs listed in the Preview section.
• [ ] Check images for PII
• [ ] Review any mentions of "Contact Datadog support" for internal support documentation.

[github-actions[bot]]

Preview links (active after the build_preview check completes)

New or renamed files

• https://docs-staging.datadoghq.com/heston/csp-logs/integrations/content_security_policy_logs

Removed or renamed files (these should redirect)

• https://docs-staging.datadoghq.com/heston/csp-logs/tracing/guide/ingestion_sampling_use_cases

Modified Files

• https://docs-staging.datadoghq.com/heston/csp-logs/tracing/guide/

[hestonhoffman]

I need to get a logo for the integrations page before I publish this, so I'll work on that