Update: Dynamically set Wi-Fi mode based on nconfig

- Read Wi-Fi mode from `nconfig` and default to APSTA if invalid or unavailable.
- Adjust initialization to handle AP or STA configurations accordingly.
- Enhance logging to reflect the selected mode during startup.

Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>

main/wifi/ap.c

@@ -44,6 +44,7 @@ void wifi_init_ap(void)
     wifi_config_t wifi_config = {
         .ap =
             {
+                .password = "",
                 .channel = AP_CHANNEL,
                 .max_connection = AP_MAX_CONN,
                 .authmode = WIFI_AUTH_WPA2_PSK,
@@ -69,10 +70,6 @@ void wifi_init_ap(void)
     {
         nconfig_read(AP_PASSWORD, (char*)wifi_config.ap.password, sizeof(wifi_config.ap.password));
     }
-    else
-    {
-        strcpy((char*)wifi_config.ap.password, DEFAULT_AP_PASS);
-    }
 
     // If password is not set, use open authentication
     if (strlen((char*)wifi_config.ap.password) == 0)