Refactor into a client/server model, to enable multiple clients to access the BMS data

bmspy-server.service

@@ -0,0 +1,14 @@
+[Unit]
+Description=Make BMS data available for consumers
+
+[Service]
+Type=exec
+# The full path of the git repo on your system
+WorkingDirectory=/usr/local/bmspy
+ExecStart=poetry run bmspy-server
+RestartSec=5
+Restart=on-failure
+
+
+[Install]
+WantedBy=default.target