v2.1.0: Upgrade esp-wifi-connect to 3.0; New device state machine (#1528)

* Upgrade component version

* update fonts component version

* Handle OTA error code

* Update project version to 2.1.0 and add device state machine implementation

- Upgrade  esp-wifi-connect to 3.0.0, allowing reconfiguring wifi without rebooting
- Introduce device state machine with state change notification in new files
- Remove obsolete device state event files
- Update application logic to utilize new state machine
- Minor adjustments in various board implementations for state handling

* fix compile errors

* Refactor power saving mode implementation to use PowerSaveLevel enumeration

- Updated Application class to replace SetPowerSaveMode with SetPowerSaveLevel, allowing for LOW_POWER and PERFORMANCE settings.
- Modified various board implementations to align with the new power save level structure.
- Ensured consistent handling of power save levels across different board files, enhancing code maintainability and clarity.

* Refactor power save level checks across multiple board implementations

- Updated the condition for power save level checks in various board files to ensure that the power save timer only wakes up when the level is not set to LOW_POWER.
- Improved consistency in handling power save levels, enhancing code clarity and maintainability.

* Refactor EnterWifiConfigMode calls in board implementations

- Updated calls to EnterWifiConfigMode to use the appropriate instance reference (self or board) across multiple board files.
- Improved code consistency and clarity in handling device state during WiFi configuration mode entry.

* Add cellular modem event handling and improve network status updates

- Introduced new network events for cellular modem operations, including detecting, registration errors, and timeouts.
- Enhanced the Application class to handle different network states and update the display status accordingly.
- Refactored Ml307Board to implement a callback mechanism for network events, improving modularity and responsiveness.
- Updated dual_network_board and board headers to support new network event callbacks, ensuring consistent handling across board implementations.

* update esp-wifi-connect version

* Update WiFi configuration tool messages across multiple board implementations to clarify user actions

main/boards/common/board.h

@@ -6,6 +6,7 @@
 #include <mqtt.h>
 #include <udp.h>
 #include <string>
+#include <functional>
 #include <network_interface.h>
 
 #include "led/led.h"
@@ -13,6 +14,34 @@
 #include "camera.h"
 #include "assets.h"
 
+/**
+ * Network events for unified callback
+ */
+enum class NetworkEvent {
+    Scanning,              // Network is scanning (WiFi scanning, etc.)
+    Connecting,            // Network is connecting (data: SSID/network name)
+    Connected,             // Network connected successfully (data: SSID/network name)
+    Disconnected,          // Network disconnected
+    WifiConfigModeEnter,   // Entered WiFi configuration mode
+    WifiConfigModeExit,    // Exited WiFi configuration mode
+    // Cellular modem specific events
+    ModemDetecting,        // Detecting modem (baud rate, module type)
+    ModemErrorNoSim,       // No SIM card detected
+    ModemErrorRegDenied,   // Network registration denied
+    ModemErrorInitFailed,  // Modem initialization failed
+    ModemErrorTimeout      // Operation timeout
+};
+
+// Power save level enumeration
+enum class PowerSaveLevel {
+    LOW_POWER,    // Maximum power saving (lowest power consumption)
+    BALANCED,     // Medium power saving (balanced)
+    PERFORMANCE,  // No power saving (maximum power consumption / full performance)
+};
+
+// Network event callback type (event, data)
+// data contains additional info like SSID for Connecting/Connected events
+using NetworkEventCallback = std::function<void(NetworkEvent event, const std::string& data)>;
 
 void* create_board();
 class AudioCodec;
@@ -46,10 +75,11 @@ public:
     virtual Camera* GetCamera();
     virtual NetworkInterface* GetNetwork() = 0;
     virtual void StartNetwork() = 0;
+    virtual void SetNetworkEventCallback(NetworkEventCallback callback) { (void)callback; }
     virtual const char* GetNetworkStateIcon() = 0;
     virtual bool GetBatteryLevel(int &level, bool& charging, bool& discharging);
     virtual std::string GetSystemInfoJson();
-    virtual void SetPowerSaveMode(bool enabled) = 0;
+    virtual void SetPowerSaveLevel(PowerSaveLevel level) = 0;
     virtual std::string GetBoardJson() = 0;
     virtual std::string GetDeviceStatusJson() = 0;
 };