feat: Enable gzip compression on polling requests (#249)

Author: keelerm84

contract-tests/service.rb

@@ -36,6 +36,7 @@
       'migrations',
       'event-sampling',
       'context-comparison',
+      'polling-gzip',
     ],
   }.to_json
 end

lib/ldclient-rb/requestor.rb

@@ -26,6 +26,8 @@ def initialize(sdk_key, config)
       @sdk_key = sdk_key
       @config = config
       @http_client = LaunchDarkly::Util.new_http_client(config.base_uri, config)
+        .use(:auto_inflate)
+        .headers("Accept-Encoding" => "gzip")
       @cache = @config.cache_store
     end