TSM scale file support missing in BASOP

The time-scale modification (TSM) part supporting the TSM scale file is missing in the BASOP framework. I.e., the files lib_util/tsm_scale_file_reader.c and lib_util/tsm_scale_file_reader.h are not part of the BASOP framework. Though this is a debugging functionality, I am not sure whether this is really intended.

If this functionality is ported from FLP framework, note to port also updates from !1534 (merged).