jaeger 0.5.0

• #62: Add a new Trajectory class as a low-level method to send trajectories.
• #67: Improve initialisation time by making sure all commands after the initial GET_FIRMWARE_VERSION know how many positioners are connected and don't time out.
• #68: Use sdsstools instead of core utilities. Some clean-up of the packaging files.
• Adapt to using CLU>=0.2.0.
• Retrieve configuration from $SDSSCORE_DIR/configuration/actors/jaeger.yaml or from ~/.config/sdss/jaeger.yml.
• #51: Set up an asyncio exception handler and make the Poller use it if there is a problem with the callback.
• #64: Fixed WAGO disconnects by increasing the timeout of the hardware.
• #61: Stop the positioners before existing if CLI receives a SIGINT, SIGTERM, or SIGHUP.
• #72, #73: Fix UIDs not being returned to the pool in some cases, which emptied it after a while.
• Rename cli.py to __main__.py.
• #76: Implement calibration commands and routines.
• #75: Implement trajectories using SYNC line.
• #21: (and several associated issues) Remove WAGO and use external drift library.
• #70: Better documentation for firmware update.
• #83: Use GitHub workflows.