First steps to config / preferences

include/config.h

@@ -0,0 +1,9 @@
+#pragma once
+
+class Config {
+private:
+    Preferences *prefs;
+public:
+    Config();
+    bool loadConfig();
+};

include/main.h

@@ -20,6 +20,8 @@
 #define FIRMWARE_TYPE STRINGIFY(PIO_ENV_BUILD)
 #define IDF_VERSION STRINGIFY(ESP_IDF_VERSION_MAJOR) "." STRINGIFY(ESP_IDF_VERSION_MINOR) "." STRINGIFY(ESP_IDF_VERSION_PATCH)
 
+#define PREF_NAME "nvs"
+
 // WIFI AP
 #define WIFI_CHANNEL 9
 #define WIFI_MAX_STA 2