Add News Search API Swagger Spec (#2026)

* Add News Search API Swagger Spec

* Add News Search API Swagger Spec

* Add NewsArticle into Spec

* Add miss comma before x-ms-examples

* suppress _type error, fix 'OBJECT_ADDITIONAL_PROPERTIES'  error, add … (#2)

Suppress _type error, fix 'OBJECT_ADDITIONAL_PROPERTIES'  error, add required parameters

* Update description and Remove some internal properties (#3)

Update description and Remove some internal properties

Author: xiaojinghe

specification/cognitiveservices/data-plane/NewsSearch/readme.md

@@ -0,0 +1,41 @@
+# Cognitive Services News Search SDK
+
+> see https://aka.ms/autorest
+
+Configuration for generating News Search SDK.
+
+The current release is `release_1_0`.
+
+``` yaml
+
+tag: release_1_0
+add-credentials: true
+openapi-type: data-plane
+```
+# Releases
+
+### Release 1.0
+These settings apply only when `--tag=release_1_0` is specified on the command line.
+
+``` yaml $(tag) == 'release_1_0'
+input-file: v1.0/NewsSearch.json
+```
+
+## Suppressions 
+
+Suppressing errors due to API design: 
+``` yaml 
+directive:
+  - suppress: R3016
+    reason: _type is a polymorphic discriminator that can't be changed. 
+```
+
+## CSharp Settings
+These settings apply only when `--csharp` is specified on the command line.
+``` yaml $(csharp) 
+csharp: 
+  namespace: Microsoft.Azure.CognitiveServices.Search.NewsSearch
+  output-folder: $(csharp-sdks-folder)/CognitiveServices/dataPlane/Search/Search/Generated/NewsSearch
+  sync-methods: none
+```
+