fix: temperature, sensor

changes:
- sensor temperature add
- sensor temperature list
- sensor temperature rm
- temperature get
- temperature log
- temperature push

pkg/sensor/sensor.go

@@ -0,0 +1,14 @@
+package sensor
+
+import (
+	"os"
+	"path/filepath"
+)
+
+func sensorExists(wirePath, sensorID string) bool {
+	sensorPath := filepath.Join(wirePath, sensorID)
+	if _, err := os.Stat(sensorPath); os.IsNotExist(err) {
+		return false
+	}
+	return true
+}