add preset for natural=strait

see also https://github.com/openstreetmap/iD/issues/9294

data/presets/natural/strait.json

@@ -0,0 +1,20 @@
+{
+    "icon": "iD-waterway-river",
+    "geometry": [
+        "point",
+        "line",
+        "area"
+    ],
+    "fields": [
+        "name"
+    ],
+    "tags": {
+        "natural": "strait"
+    },
+    "terms": [
+        "channel",
+        "pass",
+        "passage"
+    ],
+    "name": "Strait"
+}