Add Waterway Access Point preset and add field to Slipway preset

data/presets/leisure/slipway.json

@@ -2,16 +2,41 @@
     "icon": "maki-slipway",
     "fields": [
         "name",
+        "operator",
         "surface",
         "access_simple",
+        "canoe",
+        "trailer",
         "fee",
         "payment_multi_fee",
-        "charge_fee"
+        "charge_fee",
+        "tidal"
     ],
     "moreFields": [
+        "address",
+        "bin",
+        "boat",
+        "camping",
+        "covered",
+        "dog",
+        "drinking_water_available",
+        "fishing",
+        "gnis/feature_id-US",
+        "group_only",
+        "intermittent",
         "lit",
+        "motorboat",
         "opening_hours",
+        "picnic_table",
+        "reservation",
         "seamark/type",
+        "seasonal",
+        "shower",
+        "snowmobile",
+        "swimming",
+        "toilets",
+        "trailer",
+        "wheelchair",
         "width"
     ],
     "geometry": [