* feat(auth): Enhanced device login session management
- Upon login, obtain and verify `Client-Id` to ensure unique device sessions.
- If there are too many device sessions, clean up old ones according to the configured policy or return an error.
- If a device session is invalid, deregister the old token and return a 401 error.
- Added `EnsureActiveOnLogin` function to handle the creation and refresh of device sessions during login.
* feat(session): Modified session deletion logic to mark sessions as inactive.
- Changed session deletion logic to mark sessions as inactive using the `MarkInactive` method.
- Adjusted error handling to ensure an error is returned if marking fails.
* feat(session): Added device limits and eviction policies
- Added a device limit, controlling the maximum number of devices using the `MaxDevices` configuration option.
- If the number of devices exceeds the limit, the configured eviction policy is used.
- If the policy is `evict_oldest`, the oldest device is evicted.
- Otherwise, an error message indicating too many devices is returned.
* refactor(session): Filter for the user's oldest active session
- Renamed `GetOldestSession` to `GetOldestActiveSession` to more accurately reflect its functionality
- Updated the SQL query to add the `status = SessionActive` condition to retrieve only active sessions
- Replaced all callpoints and unified the new function name to ensure logical consistency
- Renamed `CountSessionsByUser` to `CountActiveSessionsByUser` and added session status filtering
- Added user and device session limit, with policy handling when exceeding the limit
- Introduced device eviction policy: If the maximum number of devices is exceeded, the oldest session will be evicted using the "evict_oldest" policy
- Modified `LastActive` update logic to ensure accurate session activity time
- Removed the error returned when the session status is `SessionInactive`.
- Updated the `LastActive` field of the session to always record the current time.
* feat(auth): Added device session management
- Added the `handleSession` function to manage user device sessions and verify client identity
- Updated `auth.go` to call `handleSession` for device handling when a user logs in
- Added the `Session` model to database migrations
- Added `device.go` and `session.go` files to handle device session logic
- Updated `settings.go` to add device-related configuration items, such as the maximum number of devices, device eviction policy, and session TTL
* feat(session): Adds session management features
- Added `SessionInactive` error type in `device.go`
- Added session-related APIs in `router.go` to support listing and evicting sessions
- Added `ListSessionsByUser`, `ListSessions`, and `MarkInactive` methods in `session.go`
- Returns an appropriate error when the session state is `SessionInactive`
* feat(auth): Marks the device session as invalid.
- Import the `session` package into the `auth` module to handle device session status.
- Add a check in the login logic. If `device_key` is obtained, call `session.MarkInactive` to mark the device session as invalid.
- Store the invalid status in the context variable `session_inactive` for subsequent middleware checks.
- Add a check in the session refresh logic to abort the process if the current session has been marked invalid.
* feat(auth, session): Added device information processing and session management changes
- Updated device handling logic in `auth.go` to pass user agent and IP information
- Adjusted database queries in `session.go` to optimize session query fields and add `user_agent` and `ip` fields
- Modified the `Handle` method to add `ua` and `ip` parameters to store the user agent and IP address
- Added the `SessionResp` structure to return a session response containing `user_agent` and `ip`
- Updated the `/admin/user/create` and `/webdav` endpoints to pass the user agent and IP address to the device handler
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