add field for the "two_sided=yes" tag

see https://github.com/openstreetmap/iD/issues/9329#issuecomment-1270589307

data/presets/barrier/city_wall.json

@@ -4,6 +4,10 @@
         "height",
         "material"
     ],
+    "moreFields": [
+        "{barrier}",
+        "two_sided"
+    ],
     "geometry": [
         "line",
         "area"

data/presets/barrier/guard_rail.json

@@ -3,6 +3,10 @@
     "fields": [
         "material"
     ],
+    "moreFields": [
+        "{barrier}",
+        "two_sided"
+    ],
     "geometry": [
         "line"
     ],

data/presets/barrier/kerb.json

@@ -3,7 +3,8 @@
     "fields": [
         "kerb",
         "tactile_paving",
-        "wheelchair"
+        "wheelchair",
+        "two_sided"
     ],
     "moreFields": [
         "material"