update connection provider to use IPv4

Author: lganzzzo

src/AppComponent.hpp

@@ -30,7 +30,7 @@ class AppComponent {
    *  Create ConnectionProvider component which listens on the port
    */
   OATPP_CREATE_COMPONENT(std::shared_ptr<oatpp::network::ServerConnectionProvider>, serverConnectionProvider)([] {
-    return oatpp::network::tcp::server::ConnectionProvider::createShared({"localhost", 8000});
+    return oatpp::network::tcp::server::ConnectionProvider::createShared({"0.0.0.0", 8000, oatpp::network::Address::IP_4});
   }());
 
   /**