Create non-functioning stub of algorithm re #9260

Signed-off-by: Karl Palmen <karl.palmen@stfc.ac.uk>
Add code to check histogram type re #9260

Signed-off-by: Karl Palmen <karl.palmen@stfc.ac.uk>
Get number of banks re #9260

Signed-off-by: Karl Palmen <karl.palmen@stfc.ac.uk>
Add function to get number of banks re #9260

This function presently only works when this number has a single digit. lexical_cast<int> does not accept space characters.

Signed-off-by: Karl Palmen <karl.palmen@stfc.ac.uk>
Merge branch 'feature/9260_load_gsas_instrument_file' into develop