Auto_poweroff option moved from desktop to power.

Add settings for power service (load|save).

applications/services/power/power_service/power_settings.c

@@ -0,0 +1,75 @@
+#include "power_settings.h"
+#include "power_settings_filename.h"
+
+#include <saved_struct.h>
+#include <storage/storage.h>
+
+#define TAG "PowerSettings"
+
+#define POWER_SETTINGS_VER_0 (0) // OLD version number
+#define POWER_SETTINGS_VER   (1) // NEW actual version nnumber
+
+#define POWER_SETTINGS_PATH  INT_PATH(POWER_SETTINGS_FILE_NAME)
+#define POWER_SETTINGS_MAGIC (0x18)
+
+typedef struct {
+//inital set - empty
+} PowerSettingsV0;
+
+void power_settings_load(PowerSettings* settings) {
+    furi_assert(settings);
+
+    bool success = false;
+
+    do {
+        uint8_t version;
+        if(!saved_struct_get_metadata(POWER_SETTINGS_PATH, NULL, &version, NULL)) break;
+
+        if(version == POWER_SETTINGS_VER) { // if config actual version - load it directly
+            success = saved_struct_load(
+                POWER_SETTINGS_PATH,
+                settings,
+                sizeof(PowerSettings),
+                POWER_SETTINGS_MAGIC,
+                POWER_SETTINGS_VER);
+
+        } else if(version == POWER_SETTINGS_VER_0) { // if config previous version - load it and manual set new settings to inital value
+            PowerSettingsV0* settings_v0 = malloc(sizeof(PowerSettingsV0));
+
+            success = saved_struct_load(
+                POWER_SETTINGS_PATH,
+                settings_v0,
+                sizeof(PowerSettingsV0),
+                POWER_SETTINGS_MAGIC,
+                POWER_SETTINGS_VER_0);
+
+            if(success) {
+                settings->p_auto_poweroff_delay_ms = 0;
+            }
+
+            free(settings_v0);
+        }
+
+    } while(false);
+
+    if(!success) {
+        FURI_LOG_W(TAG, "Failed to load file, using defaults");
+        memset(settings, 0, sizeof(PowerSettings));
+        power_settings_save(settings);
+    }
+}
+
+void power_settings_save(const PowerSettings* settings) {
+    furi_assert(settings);
+
+    const bool success = saved_struct_save(
+        POWER_SETTINGS_PATH,
+        settings,
+        sizeof(PowerSettings),
+        POWER_SETTINGS_MAGIC,
+        POWER_SETTINGS_VER);
+
+    if(!success) {
+        FURI_LOG_E(TAG, "Failed to save file");
+    }
+}