Refactor DALI component: remove BACnet bridge support and update related documentation

Co-authored-by: Copilot <copilot@github.com>

include/bridge_provisioning.hpp

@@ -1,9 +1,7 @@
 #pragma once
 
-#include "bacnet_bridge.hpp"
 #include "bridge_model.hpp"
 
-#include <optional>
 #include <string>
 #include <vector>
 
@@ -17,7 +15,6 @@ using esp_err_t = int;
 
 struct BridgeRuntimeConfig {
   std::vector<BridgeModel> models;
-  std::optional<BacnetBridgeConfig> bacnet;
   DaliValue::Object metadata;
 
   static BridgeRuntimeConfig fromJson(const DaliValue::Object& json);