Add dls_class to root of xml in generated bob files

[OCopping]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.98%. Comparing base (caf856f) to head (7ead6b0).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #170      +/-   ##
==========================================
+ Coverage   81.89%   81.98%   +0.09%     
==========================================
  Files           7        7              
  Lines         580      583       +3     
==========================================
+ Hits          475      478       +3     
  Misses        105      105              

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[niamhdougan]

For proof of concept can you add the dls_class.bcf file and amend settings.ini to point at it?