feature: http decoder

* support parser uncompress request/response
    * define public API interface

src/main.cpp

@@ -84,7 +84,7 @@ int main(int argc, char ** argv)
 	struct plugin_manager *plug_mgr = plugin_manager_create();
 
 	// register build-in plugin
-	plugin_manager_register(plug_mgr, "HTTP", SESSION_EVENT_ALL, http_decoder);
+	plugin_manager_register(plug_mgr, "HTTP", SESSION_EVENT_ALL, http_entry);
 
 	// load external plugins
 	char file_path[] = "./plugs/plugins.inf";