Add NVS storage handler and integrate with main application logic

main/common/constants.h

@@ -1,3 +1,4 @@
+#pragma once
 // 800x480 = 384,000 pixels
 
 #define EINK_WIDTH    800
@@ -11,4 +12,5 @@
 #define SYSTEM_START_BIT        (1 << 2)
 //
 #define DISPLAY_READY_BIT       (1 << 1)
-#define TOUCH_CALIBRATED_BIT    (1 << 2)
+#define TOUCH_CALIBRATED_BIT    (1 << 2)
+#define STORAGE_READY_BIT       (1 << 3)

main/common/queue_defs.h

@@ -1,3 +1,4 @@
+#pragma once
 #include <indev/lv_indev.h>
 
 typedef enum {