Add Mountain Biking Route preset (close #99)

data/presets/type/route/mtb.json

@@ -0,0 +1,33 @@
+{
+    "icon": "maki-bicycle",
+    "fields": [
+        "{type/route/bicycle}"
+    ],
+    "moreFields": [
+        "{type/route/bicycle}"
+    ],
+    "geometry": [
+        "relation"
+    ],
+    "tags": {
+        "type": "route",
+        "route": "mtb"
+    },
+    "reference": {
+        "key": "route",
+        "value": "mtb"
+    },
+    "terms": [
+        "all mountain",
+        "cross-country cycling",
+        "downhill cycling",
+        "enduro",
+        "freeride",
+        "mountain bicycling",
+        "mountain bike route",
+        "mountain cycling",
+        "mtb",
+        "trail riding"
+    ],
+    "name": "Mountain Biking Route"
+}

interim/source_strings.yaml

@@ -9285,6 +9285,11 @@ en:
         # 'type=route + route=monorail\n\nTranslate the primary name. Optionally, add equivalent synonyms on newlines in order of preference (press the Return key).'
         name: Monorail Route
         terms: '<translate with synonyms or related terms for ''Monorail Route'', separated by commas>'
+      type/route/mtb:
+        # 'type=route + route=mtb\n\nTranslate the primary name. Optionally, add equivalent synonyms on newlines in order of preference (press the Return key).'
+        name: Mountain Biking Route
+        # 'terms: all mountain,cross-country cycling,downhill cycling,enduro,freeride,mountain bicycling,mountain bike route,mountain cycling,mtb,trail riding'
+        terms: '<translate with synonyms or related terms for ''Mountain Biking Route'', separated by commas>'
       type/route/pipeline:
         # 'type=route + route=pipeline\n\nTranslate the primary name. Optionally, add equivalent synonyms on newlines in order of preference (press the Return key).'
         name: Pipeline Route