When proxying through another new-api instance, the upstream
X-Oneapi-Request-Id was overwriting the local one in client responses.
This adds a new `upstream_request_id` field to the logs table, captures
the upstream ID during relay, and filters it from being copied back to
the client. Frontend gains search/filter and detail display support.
- Added a new 'group' parameter to various logging functions, including RecordConsumeLog, GetAllLogs, and GetUserLogs, to allow for more granular log tracking.
- Updated the logs table component to display group information, improving the visibility of log data.
- Refactored related functions to accommodate the new group parameter, ensuring consistent handling across the application.
- Improved the initialization of the group column for PostgreSQL compatibility.
