apt updates sensor (#150)

src/config.py.example

@@ -74,4 +74,7 @@ wifi_signal_dbm = False
 rpi5_fan_speed = False
 
 # this works only on raspbery pi
-rpi_power_status = False
+rpi_power_status = False
+
+# Check for apt updates - experimental feature, disabled by default, updateed with update_check_interval
+apt_updates = False