Add welcome message state firmware setting

Author: renzenicolai

include/nvs_settings_firmware.h

@@ -9,3 +9,5 @@
 
 esp_err_t nvs_settings_get_firmware_patch_level(uint8_t* out_level);
 esp_err_t nvs_settings_set_firmware_patch_level(uint8_t level);
+esp_err_t nvs_settings_get_welcome_message_state(uint8_t* out_level);
+esp_err_t nvs_settings_set_welcome_message_state(uint8_t level);

src/nvs_settings_firmware.c

@@ -12,3 +12,11 @@ esp_err_t nvs_settings_get_firmware_patch_level(uint8_t* out_level) {
 esp_err_t nvs_settings_set_firmware_patch_level(uint8_t level) {
     return nvs_settings_set_u8("fw.patch", level);
 }
+
+esp_err_t nvs_settings_get_welcome_message_state(uint8_t* out_level) {
+    return nvs_settings_get_u8("fw.welcome", 0, out_level);
+}
+
+esp_err_t nvs_settings_set_welcome_message_state(uint8_t level) {
+    return nvs_settings_set_u8("fw.welcome", level);
+}