Add new persistent version for MM and sTGC RDOs
This MR adds a new persistent version of the MM and sTGC RDOs in preparation for the conversion of physical units in the digits to detector-like counts in the RDOs and is necessary in order to maintain the ability to read old RDOs after the conversion is in place. For this purpose new bool is added to the transient RDOs which in the persistent RDOs is absorbed in the relBCID or bcTag being set to 9, which is a value out of range compared to what the detector and therefore also the conversion will output (detector range is 0-7). Also the variable types are aligned now between the persistent and the transient versions of the MM/STGC_RawData classes.