feat: implement Spore framework class as main orchestration layer

- Add Spore class as unified interface for all core framework functionality
- Implement setup() and begin() methods for flexible initialization pattern
- Add service registration with addService() for both raw and smart pointers
- Provide accessor methods for core components (getTaskManager, getContext, etc.)
- Automatically include core services (Node, Network, Cluster, Task)
- Update all examples to use simplified Spore framework approach
- Fix circular dependency issues in include structure
- Remove setHostname and setApiPort configuration methods
- Add comprehensive documentation and usage examples

The Spore class encapsulates all core functionality from the base example
and provides a clean, unified API for the entire framework. Examples now
use just spore.setup() -> add services -> spore.begin() -> spore.loop().

examples/relay/main.cpp

@@ -1,65 +1,37 @@
 #include <Arduino.h>
-#include <functional>
-#include "Globals.h"
-#include "NodeContext.h"
-#include "NetworkManager.h"
-#include "ClusterManager.h"
-#include "ApiServer.h"
-#include "TaskManager.h"
-
-// Services
-#include "services/NodeService.h"
-#include "services/NetworkService.h"
-#include "services/ClusterService.h"
-#include "services/TaskService.h"
+#include "Spore.h"
 #include "RelayService.h"
 
-using namespace std;
-
 // Choose a default relay pin. For ESP-01 this is GPIO0. Adjust as needed for your board.
 #ifndef RELAY_PIN
 #define RELAY_PIN 0
 #endif
 
-NodeContext ctx({
+// Create Spore instance with custom labels
+Spore spore({
     {"app", "relay"},
     {"device", "actuator"},
     {"pin", String(RELAY_PIN)}
 });
-NetworkManager network(ctx);
-TaskManager taskManager(ctx);
-ClusterManager cluster(ctx, taskManager);
-ApiServer apiServer(ctx, taskManager, ctx.config.api_server_port);
 
-// Create services
-NodeService nodeService(ctx, apiServer);
-NetworkService networkService(network);
-ClusterService clusterService(ctx);
-TaskService taskService(taskManager);
-RelayService relayService(taskManager, RELAY_PIN);
+// Create custom service
+RelayService* relayService = nullptr;
 
 void setup() {
-    Serial.begin(115200);
-
-    // Setup WiFi first
-    network.setupWiFi();
-
-    // Initialize and start all tasks
-    taskManager.initialize();
-
-    // Register services and start API server
-    apiServer.addService(nodeService);
-    apiServer.addService(networkService);
-    apiServer.addService(clusterService);
-    apiServer.addService(taskService);
-    apiServer.addService(relayService);
-    apiServer.begin();
-
-    // Print initial task status
-    taskManager.printTaskStatus();
+    // Initialize the Spore framework
+    spore.setup();
+    
+    // Create and add custom service
+    relayService = new RelayService(spore.getTaskManager(), RELAY_PIN);
+    spore.addService(relayService);
+    
+    // Start the API server and complete initialization
+    spore.begin();
+    
+    Serial.println("[Main] Relay service registered and ready!");
 }
 
 void loop() {
-    taskManager.execute();
-    yield();
+    // Run the Spore framework loop
+    spore.loop();
 }