don't check for request->is_htmx_request for sending frames, check only "frame" url paremeter

added config parameter: request_frame_parameter, default: "frame"

winixd/core/config.h

@@ -672,6 +672,10 @@ public:
  	// default: 128
  	size_t ezc_out_streams_size;
 
+ 	// the name of the url parameter for returning a frame, e.g. https://domain.tld/mydir/myfunction/frame:foo
+ 	// default: frame
+ 	std::wstring request_frame_parameter;
+
 	// when true then when a user want to create a new account
 	// he has to provide his email and a message will be sent back to him
 	// with a link to activate the account