Treat Unknown as full

Unknown means the charging threshold was reached

src/sensors/tp_battery.rs

@@ -42,6 +42,7 @@ impl TPBatterySensor {
     fn parse_status(s: &str) -> Status {
         match s {
             "Full" => Status::FULL,
+            "Unknown" => Status::FULL,
             "Charging" => Status::CHARGING,
             _ => Status::DISCHARGING
         }