feat: log tailnet tunnels to the connection log - #27005

PR title scope "coderd" does not contain all changed files. Files outside scope: - codersdk/connectionlog.go - docs/reference/api/schemas.md - enterprise/coderd/connectionlog.go - site/src/api/typesGenerated.ts - site/src/pages/ConnectionLogPage/ConnectionLogRow/ConnectionLogDescription/ConnectionLogDescription.stories.tsx - site/src/pages/ConnectionLogPage/ConnectionLogRow/ConnectionLogDescription/ConnectionLogDescription.tsx - site/src/utils/connection.ts Use a broader scope or no scope (e.g., "feat: ...") for cross-cutting changes. See: https://github.com/coder/coder/blob/main/docs/about/contributing/CONTRIBUTING.md#commit-messages