OpenAI Audit and Compliance Logs Integration

**What the feature is**: OpenAI Audit and Compliance Logs Integration

**Value proposition**: Moves Elastic beyond OpenAI usage metrics into the security, compliance, and data governance scenarios enterprises expect: organization admin audit activity plus ChatGPT Enterprise conversation and workspace signals suitable for DLP, eDiscovery, SIEM, and immutable audit trails (including regimes such as GDPR and HIPAA where customers map controls accordingly).

**Expected outcome**: Two new datastreams. Admin audit: ingest organization-level events via `/v1/organization/audit_logs`. Compliance: ingest conversation logs and compliance events from OpenAI’s Compliance Logs Platform.

**Optional: Key user stories / use cases**: As a security analyst, I want ChatGPT Enterprise activity and content-risk signals in Elastic so that I can detect potential misuse or exfiltration of sensitive data and tune policies with evidence. As legal or IT, I want preserved, searchable conversation and workspace metadata aligned to compliance exports so that I can support litigation holds, investigations, and audits. As a compliance owner, I want append-only compliance log semantics and admin audit trails in Elastic so that I can demonstrate governance and monitoring to regulators and internal risk teams.