add support deprecated phpdoc tag

Your Name · Your Name · commit 5fc5e6996756 · 2018-09-23T19:28:46.000+03:00
diff --git a/modules/swagger-codegen/src/main/resources/php-symfony/api.mustache b/modules/swagger-codegen/src/main/resources/php-symfony/api.mustache
@@ -46,6 +46,9 @@ interface {{classname}}
     {{#operation}}
 
     /**
+    {{#isDeprecated}}
+     * @deprecated
+    {{/isDeprecated}}
      * Operation {{{operationId}}}
     {{#summary}}
      *
