Created skeleton unit test re #7617

It now verifies that the algorithm initializes and executes without error and produces an output file in accordance with its outputFile property.

Signed-off-by: Karl Palmen <karl.palmen@stfc.ac.uk>
Unit test checks that Output file can be parsed as XML file re #7617

Also some unnecessary includes were removed from the ConvertFullprofToXML.cpp.

Signed-off-by: Karl Palmen <karl.palmen@stfc.ac.uk>
Add check for child nodes re #7617

Signed-off-by: Karl Palmen <karl.palmen@stfc.ac.uk>
Merge branch 'feature/7617_fullprof_to_xml' into develop