Added conformance class for Mapbox Vector Tiles (#1263)

* - Added conformance class for Mapbox Vector Tiles

* - updated number of conformance classes on tests

---------

Co-authored-by: doublebyte1 <info@doublebyte.net>

pygeoapi/api.py

@@ -142,7 +142,8 @@ CONFORMANCE = {
         'http://www.opengis.net/spec/ogcapi-maps-1/1.0/conf/core'
     ],
     'tile': [
-        'http://www.opengis.net/spec/ogcapi-tiles-1/1.0/conf/core'
+        'http://www.opengis.net/spec/ogcapi-tiles-1/1.0/conf/core',
+        'http://www.opengis.net/spec/ogcapi-tiles-1/1.0/conf/mvt'
     ],
     'record': [
         'http://www.opengis.net/spec/ogcapi-records-1/1.0/conf/core',

tests/test_api.py

@@ -607,7 +607,7 @@ def test_conformance(config, api_):
 
     assert isinstance(root, dict)
     assert 'conformsTo' in root
-    assert len(root['conformsTo']) == 25
+    assert len(root['conformsTo']) == 26
     assert 'http://www.opengis.net/spec/ogcapi-features-2/1.0/conf/crs' \
            in root['conformsTo']