added drupal config for REST

config/sync/rest.resource.entity.block.yml

@@ -0,0 +1,18 @@
+uuid: 9d8cdf5f-aab0-4a7a-b60b-1a20635a0baa
+langcode: en
+status: true
+dependencies:
+  module:
+    - block
+    - serialization
+    - user
+id: entity.block
+plugin_id: 'entity:block'
+granularity: resource
+configuration:
+  methods:
+    - GET
+  formats:
+    - json
+  authentication:
+    - cookie