Update power presets following transformer tagging extension (#447)

data/presets/_power.json

@@ -10,10 +10,8 @@
         "power": "*"
     },
     "fields": [
-        "power"
-    ],
-    "moreFields": [
-        "material"
+        "power",
+        "operator"
     ],
     "searchable": false,
     "name": "Power Feature"

data/presets/power/transformer.json

@@ -16,7 +16,8 @@
         "voltage/secondary",
         "voltage/tertiary",
         "windings",
-        "windings/configuration"
+        "windings/configuration",
+        "windings/auto"
     ],
     "geometry": [
         "point",