Extend security audit logging

Created by: filiphaftek

Feature request description

We need to extend security logging:

• - 1. Extend security_events to support API token operations
• - 2. Extend security_events to support OIDC logins
• - 3. Extend security_events to support Github Auth logins
• - 4. Extends security_events to login impersonate user actions - sudo access token
• - 5. Allow enable audit_logs via env variable (to avoid changing by admin in site-config.json) - now it's only in [dot-com mode] (PR)(https://sourcegraph.com/github.com/sourcegraph/sourcegraph@409dfa0859f481c7038160de0a8e7bee95464c2b/-/blob/internal/database/security_event_logs.go?L105)
• - 6. Allow send audit logs to dedicated logger (not only to DB) - log framework

Is your feature request related to a problem? If so, please describe.

Required for Managed Instances - OIDC logging Short-lived tokens aka impersonate user - issue

Linked PRs/issues