add field for the "two_sided=yes" tag

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

data/fields/crossing_raised.json

@@ -13,11 +13,5 @@
             "undefined": "No",
             "table": "Yes"
         }
-    },
-    "terms": [
-        "flat top",
-        "hump",
-        "speed",
-        "slow"
-    ]
+    }
 }

data/fields/two_sided.json

@@ -0,0 +1,17 @@
+{
+    "key": "two_sided",
+    "type": "defaultCheck",
+    "label": "Two-Sided",
+    "terms": [
+        "double-sided"
+    ],
+    "geometry": [
+        "line"
+    ],
+    "strings": {
+        "options": {
+            "undefined": "No",
+            "yes": "Yes"
+        }
+    }
+}