Add field 'website:menu' (#803)

* Add "website/menu" in sustenance amenity moreFields section

data/fields/website/menu.json

@@ -0,0 +1,13 @@
+{
+    "key": "website:menu",
+    "type": "url",
+    "placeholder": "https://example.com",
+    "label": "Menu Link",
+    "terms": [
+        "online menu",
+        "menu uri",
+        "menu url",
+        "website menu",
+        "menu"
+    ]
+}

data/presets/amenity/biergarten.json

@@ -10,7 +10,8 @@
     "moreFields": [
         "{amenity/bar}",
         "cuisine",
-        "opening_hours/covid19"
+        "opening_hours/covid19",
+        "website/menu"
     ],
     "geometry": [
         "point",

data/presets/amenity/cafe.json

@@ -38,6 +38,7 @@
         "takeaway",
         "toilets",
         "toilets/wheelchair",
+        "website/menu",
         "wheelchair"
     ],
     "geometry": [

data/presets/amenity/fast_food.json

@@ -33,6 +33,7 @@
         "ref/FR/siret-FR",
         "smoking",
         "takeaway",
+        "website/menu",
         "wheelchair"
     ],
     "geometry": [

data/presets/amenity/food_court.json

@@ -22,6 +22,7 @@
         "outdoor_seating",
         "phone",
         "smoking",
+        "website/menu",
         "wheelchair"
     ],
     "geometry": [

data/presets/amenity/ice_cream.json

@@ -23,6 +23,7 @@
         "ref/FR/siret-FR",
         "phone",
         "takeaway",
+        "website/menu",
         "wheelchair"
     ],
     "geometry": [

data/presets/amenity/pub.json

@@ -31,6 +31,7 @@
         "sport_pub",
         "toilets",
         "toilets/wheelchair",
+        "website/menu",
         "wheelchair"
     ],
     "geometry": [

data/presets/amenity/restaurant.json

@@ -41,6 +41,7 @@
         "takeaway",
         "toilets",
         "toilets/wheelchair",
+        "website/menu",
         "wheelchair"
     ],
     "geometry": [