Implement native ESP-IDF radar firmware

main/app_settings.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "esp_err.h"
+
+typedef struct {
+    uint8_t brightness_percent;
+    bool sound_enabled;
+} app_settings_t;
+
+esp_err_t app_settings_init(app_settings_t *settings);
+esp_err_t app_settings_set_brightness(uint8_t percent);
+esp_err_t app_settings_set_sound(bool enabled);