Update OpenAPI spec to include internal team management endpoints

- Add GET /v1/user/team (Get Team)
- Add POST /v1/user/team (Create Workspace)
- Add PATCH /v1/user/team (Update Team)
- Add DELETE /v1/user/team (Delete Team)
- Add GET /v1/user/team/member (Get Team Members)
- Add POST /v1/user/team/member (Add Team Member)
- Add PATCH /v1/user/team/member (Update Team Member)
- Add DELETE /v1/user/team/member (Delete Team Member)

Fixes broken API reference pages for internal team operations

Author: shivankar-singh