optionally include unique tag in the output path

[rhayes777]

Resolves #1032

Note that setting the unique_tag will change the identifier

[Jammy2211]

There is still an issue whereby the unique tag is now being used, but put in the wrong place for the path:

The subhalo__sensitivity folder should be in the sensitivity/hello folder, as these results are all part of one pipeline.

The issue is happening on this example script which is faster to run:

https://github.com/Jammy2211/autofit_workspace/blob/release/scripts/features/sensitivity_mapping.py

[rhayes777]

That script had inconsistent path_prefixes, but if those are fixed I think it now works as expected

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.60%. Comparing base (5fda6dc) to head (410a25a).
Report is 38 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1053      +/-   ##
==========================================
+ Coverage   80.55%   80.60%   +0.04%     
==========================================
  Files         199      199              
  Lines       15298    15305       +7     
==========================================
+ Hits        12324    12336      +12     
+ Misses       2974     2969       -5     

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