Add EtsDeviceRuntime class for handling KNX device runtime operations

- Introduced EtsDeviceRuntime class to manage device runtime functionalities including handling tunnel frames and function property commands.
- Added support for individual address management and memory snapshot retrieval.
- Updated EtsMemorySnapshot structure to include individual address.
- Implemented identity application for DALI devices in the memory loader.
- Enhanced CMakeLists.txt to include new source files and compile definitions.
- Updated header files to include new dependencies and declarations.
- Refactored existing memory loading logic to accommodate new device runtime features.

Signed-off-by: Tony <tonylu@tony-cloud.com>

components/gateway_bridge/src/gateway_bridge.cpp

@@ -1276,7 +1276,8 @@ struct GatewayBridgeService::ChannelRuntime {
             return result;
           }
           return knx->handleCemiFrame(data, len);
-        });
+        },
+        openKnxNamespace());
     if (knx_config.has_value()) {
       knx->setConfig(knx_config.value());
       knx_router->setConfig(knx_config.value());
@@ -1308,10 +1309,15 @@ struct GatewayBridgeService::ChannelRuntime {
       return;
     }
     const auto snapshot = openknx::LoadEtsMemorySnapshot(openKnxNamespace());
-    if (snapshot.associations.empty()) {
+    const bool has_downloaded_address = snapshot.individual_address != 0 &&
+                                        snapshot.individual_address != 0xffff;
+    if (!snapshot.configured && !has_downloaded_address && snapshot.associations.empty()) {
       return;
     }
     GatewayKnxConfig updated = active_config.value();
+    if (has_downloaded_address) {
+      updated.individual_address = snapshot.individual_address;
+    }
     updated.ets_associations.clear();
     updated.ets_associations.reserve(snapshot.associations.size());
     for (const auto& association : snapshot.associations) {
@@ -1319,9 +1325,9 @@ struct GatewayBridgeService::ChannelRuntime {
           association.group_address, association.group_object_number});
     }
     knx_config = std::move(updated);
-    ESP_LOGI(kTag, "gateway=%u loaded %u OpenKNX ETS associations from NVS namespace %s",
-             channel.gateway_id, static_cast<unsigned>(snapshot.associations.size()),
-             openKnxNamespace().c_str());
+    ESP_LOGI(kTag, "gateway=%u loaded OpenKNX ETS address=0x%04x associations=%u from NVS namespace %s",
+             channel.gateway_id, snapshot.individual_address,
+             static_cast<unsigned>(snapshot.associations.size()), openKnxNamespace().c_str());
   }
 
   std::optional<DaliDomainSnapshot> diagnosticSnapshotLocked(int short_address,