Add template for ObjectAssignment using identifier names like reserved words

src/identifier-names/default/obj-assignment-prop-name.template

@@ -0,0 +1,38 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+path: language/expressions/assignment/dstr/ident-name-prop-name-literal-
+name: PropertyName of an ObjectAssignmentPattern
+esid: prod-AssignmentPattern
+info: |
+  AssignmentPattern:
+    ObjectAssignmentPattern
+
+  ObjectAssignmentPattern:
+    { AssignmentPropertyList }
+
+  AssignmentPropertyList:
+    AssignmentProperty
+    AssignmentPropertyList , AssignmentProperty
+
+  AssignmentProperty:
+    IdentifierReference Initializer_opt
+    PropertyName : AssignmentElement
+  
+  PropertyName:
+    LiteralPropertyName
+    ...
+
+  LiteralPropertyName:
+    IdentifierName
+    ...
+
+  Reserved Words
+  
+  A reserved word is an IdentifierName that cannot be used as an Identifier.
+---*/
+
+0, { /*{ declareWith }*/: x } = { /*{ referenceWith }*/: 42 };
+
+assert.sameValue(x, 42, 'property exists');