Add railway:switch field to railway=switch preset (#1084)

Author: gy-mate

data/fields/railway/switch.json

@@ -0,0 +1,17 @@
+{
+    "key": "railway:switch",
+    "type": "combo",
+    "label": "Switch Type",
+    "strings": {
+        "options": {
+            "default": "Normal Switch",
+            "double_slip": "Double-slip Switch",
+            "single_slip": "Single-slip Switch",
+            "wye": "Wye Switch",
+            "three_way": "Three-way Switch",
+            "abt": "Abt Switch"
+        }
+    },
+    "autoSuggestions": false,
+    "customValues": true
+}

data/presets/railway/switch.json

@@ -1,6 +1,7 @@
 {
     "icon": "temaki-junction",
     "fields": [
+        "railway/switch",
         "ref"
     ],
     "geometry": [