Added missing vocabulary spec to 2020-12

Solutions/Corvus.Json.Specs/Features/JsonSchema/Draft2020212/vocabulary.feature

@@ -0,0 +1,58 @@
+@draft2020-12
+
+Feature: vocabulary draft2020-12
+    In order to use json-schema
+    As a developer
+    I want to support vocabulary in draft2020-12
+
+Scenario Outline: schema that uses custom metaschema with with no validation vocabulary
+/* Schema: 
+{
+            "$id": "https://schema/using/no/validation",
+            "$schema": "http://localhost:1234/draft2020-12/metaschema-no-validation.json",
+            "properties": {
+                "badProperty": false,
+                "numberProperty": {
+                    "minimum": 10
+                }
+            }
+        }
+*/
+    Given the input JSON file "vocabulary.json"
+    And the schema at "#/0/schema"
+    And the input data at "<inputDataReference>"
+    And I generate a type for the schema
+    And I construct an instance of the schema type from the data
+    When I validate the instance
+    Then the result will be <valid>
+
+    Examples:
+        | inputDataReference   | valid | description                                                                      |
+        # { "badProperty": "this property should not exist" }
+        | #/000/tests/000/data | false | applicator vocabulary still works                                                |
+        # { "numberProperty": 20 }
+        | #/000/tests/001/data | true  | no validation: valid number                                                      |
+        # { "numberProperty": 1 }
+        | #/000/tests/002/data | true  | no validation: invalid number, but it still validates                            |
+
+Scenario Outline: ignore unrecognized optional vocabulary
+/* Schema: 
+{
+            "$schema": "http://localhost:1234/draft2020-12/metaschema-optional-vocabulary.json",
+            "type": "number"
+        }
+*/
+    Given the input JSON file "vocabulary.json"
+    And the schema at "#/1/schema"
+    And the input data at "<inputDataReference>"
+    And I generate a type for the schema
+    And I construct an instance of the schema type from the data
+    When I validate the instance
+    Then the result will be <valid>
+
+    Examples:
+        | inputDataReference   | valid | description                                                                      |
+        # foobar
+        | #/001/tests/000/data | false | string value                                                                     |
+        # 20
+        | #/001/tests/001/data | true  | number value                                                                     |

Solutions/Corvus.JsonSchema.SpecGenerator/JsonSchemaOrgTestSuiteSelector.jsonc

@@ -184,7 +184,7 @@
             "outputFolder": "Draft2020212",
             "excludeFromThisDirectory": [
                 // We don't support custom metaschema (yet!)
-                "vocabulary\\.json"
+                ////"vocabulary\\.json"
             ],
             "subdirectories": {
                 "optional": {