add "Yacht Berths" preset; allow switching between it and Marina by checkbox

* the new preset is for the tag `seamark:harbour:category=marina_no_facilities`
* keeps the tag upgrade of the `leisure=marina` preset to add `seamark:harbour:category=marina` (under the assumption that what mappers usually associate with leisure=marina does more commonly have "extra facilities" than not)
* adds a checkbox-field to de/select "domestic facilities", allowing to easily switching between Marina and Yacht Berths presets.

closes #899

data/fields/seamark/harbour/category_marina.json

@@ -0,0 +1,11 @@
+{
+    "key": "seamark:harbour:category",
+    "type": "check",
+    "label": "Domestic Facilities",
+    "strings": {
+        "options": {
+            "marina": "Yes",
+            "marina_no_facilities": "No"
+        }
+    }
+}