[API]Adiciona arquivo contendo headers padrões da API

Api/components/headers.yaml

+Competition-Token:
+  description: The token that identifies the endpoint
+  schema:
+    type: integer
+Accept-Language:
+  description: The desired language
+  schema:
+    type: string

Api/components/responses.yaml

@@ -13,9 +13,7 @@ NotFoundError:
             type: string
   headers:
     Accept-Language:
-      description: The Response language
-      schema:
-        type: string
+      $ref: https://gitlab.dev.evologica.com.br/Competify/Docs/raw/master/Api/components/headers.yaml/#/Accept-Language
 InternalServerError:
   description: Internal Server Error
   content:
@@ -31,6 +29,4 @@ InternalServerError:
             type: string
   headers:
     Accept-Language:
-      description: The Response language
-      schema:
-        type: string
+      $ref: https://gitlab.dev.evologica.com.br/Competify/Docs/raw/master/Api/components/headers.yaml/#/Accept-Language