Release v3.0.0

- Bump version to 3.0.0 and update docs

- Fix Debian payload to include TUI and install /usr/bin/sensorpajen-tui wrapper

- Make systemd unit upgrades safer and ignore deb build artifacts

debian/install

@@ -1,5 +1,7 @@
 src/sensorpajen/*.py opt/sensorpajen/src/sensorpajen/
+src/sensorpajen/tui/*.py opt/sensorpajen/src/sensorpajen/tui/
 scripts/approve-sensors.sh opt/sensorpajen/scripts/
+debian/sensorpajen-tui usr/bin/
 pyproject.toml opt/sensorpajen/
 requirements.txt opt/sensorpajen/
 readme.md usr/share/doc/sensorpajen/