[web_server] add entity sorting for v3 (#6445)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>

esphome/components/web_server/web_server.h

@@ -5,8 +5,10 @@
 #include "esphome/components/web_server_base/web_server_base.h"
 #include "esphome/core/component.h"
 #include "esphome/core/controller.h"
+#include "esphome/core/entity_base.h"
 
 #include <vector>
+#include <map>
 #ifdef USE_ESP32
 #include <freertos/FreeRTOS.h>
 #include <freertos/semphr.h>
@@ -39,6 +41,10 @@ struct UrlMatch {
   bool valid;          ///< Whether this match is valid
 };
 
+struct SortingComponents {
+  float weight;
+};
+
 enum JsonDetail { DETAIL_ALL, DETAIL_STATE };
 
 /** This class allows users to create a web server with their ESP nodes.
@@ -320,12 +326,15 @@ class WebServer : public Controller, public Component, public AsyncWebHandler {
   /// This web handle is not trivial.
   bool isRequestHandlerTrivial() override;
 
+  void add_entity_to_sorting_list(EntityBase *entity, float weight);
+
  protected:
   void schedule_(std::function<void()> &&f);
   friend ListEntitiesIterator;
   web_server_base::WebServerBase *base_;
   AsyncEventSource events_{"/events"};
   ListEntitiesIterator entities_iterator_;
+  std::map<EntityBase *, SortingComponents> sorting_entitys_;
 #if USE_WEBSERVER_VERSION == 1
   const char *css_url_{nullptr};
   const char *js_url_{nullptr};