cleanup tracker class and move helper functions

src/app/core/common.h

@@ -14,6 +14,16 @@ int HexToDec(char *input, int length);
 bool StringReplace(std::string &str, const std::string &from,
                    const std::string &to);
 
+void stle16b_i(uint8_t *const p_arr, size_t const p_index,
+               uint16_t const p_val);
+uint16_t ldle16b_i(uint8_t const *const p_arr, size_t const p_index);
+
+void stle16b(uint8_t *const p_arr, uint16_t const p_val);
+void stle32b(uint8_t *const p_arr, uint32_t const p_val);
+
+void stle32b_i(uint8_t *const p_arr, size_t const p_index,
+               uint32_t const p_val);
+
 }  // namespace core
 }  // namespace app
 }  // namespace yaze