Add custom fields for SKPQKM

custom_field_list.json

@@ -144,5 +144,18 @@
         ["uv_max", "none"],
         ["uv_avg", "none"]
     ]
-    }
+    },
+"SKPQKM": {
+        "comment": "SKPQKM telemetry",
+        "struct": "<BBBBBHH",
+        "fields": [
+            ["fix_voltage", "battery_5v_byte"],
+            ["io_voltage", "battery_5v_byte"],
+            ["reset_voltage", "battery_5v_byte"],
+            ["pv_voltage", "divide_by_100"],
+            ["time_to_fix", "none"],
+            ["uv_max", "none"],
+            ["uv_avg", "none"]
+        ]
+        }
 }