Release v1.25.1

Release version 1.25.1.

New Features
- Added `VehicleModel` support for the Isuzu N-series trucks
- Added support for Linux virtual serial ports (requires manual
  `pip install pyvirtualserialports`)
- Added file and stdin/stdout support to `p1_filter` and `p1_capture`
- Added `InputDataWrapper` message filtering and unwrap support to `p1_filter`

Changes
- Improved GNSS signal flags printouts, including RTK fix status
- Renamed `p1_filter --blacklist` option to `--invert`

Fixes
- Added `p1_filter` tool to `setup.py` application install
- Fixed websocket handling issues in `p1_capture`