variable cfg path

mission/acs/str/strHelpers.h

@@ -14,6 +14,12 @@ namespace startracker {
 static const Submode_t SUBMODE_BOOTLOADER = 1;
 static const Submode_t SUBMODE_FIRMWARE = 2;
 
+class SdCardConfigPathGetter {
+ public:
+  virtual ~SdCardConfigPathGetter() = default;
+  virtual std::optional<std::string> getCfgPath() = 0;
+};
+
 /**
  * @brief    Returns the frame type field of a decoded frame.
  */