Add icons for Max and Silent fan speeds (#362)

Author: mill1000

custom_components/midea_ac/icons.json

@@ -8,6 +8,12 @@
     "climate": {
       "midea_ac": {
         "state_attributes": {
+          "fan_mode": {
+            "state": {
+              "silent": "mdi:fan-chevron-down",
+              "max": "mdi:fan-chevron-up"
+            }
+          },
           "preset_mode": {
             "state": {
               "ieco": "mdi:leaf-circle-outline"