[FL-1818] System setting and debug options. RTC HAL refactoring. (#902)

* FuriHal: RTC API refactoring. System Setting application. FuriCore: adjustable log levels. Minor code cleanup.
* Storage: change logging levels for internal storage.
* FuriCore: fix broken trace logging level

applications/snake-game/snake-game.c

@@ -322,7 +322,7 @@ int32_t snake_game_app(void* p) {
 
     ValueMutex state_mutex;
     if(!init_mutex(&state_mutex, snake_state, sizeof(SnakeState))) {
-        furi_log_print(FURI_LOG_ERROR, "cannot create mutex\r\n");
+        FURI_LOG_E("SnakeGame", "cannot create mutex\r\n");
         free(snake_state);
         return 255;
     }