Reviewer comments

[KCGallagher]

Changes from reviewer comments

• Document that plot file format can be changed
• Include separate readmes for each backend with installation instructions]
• Incorporate backend readmes into online docs
• List recommended compiler, and filesystem library compatibility
• Add cEpiabm ymal so docs don't redirect to python documentation

(N.B This last change means the files on main do not match the paths expected by ReadTheDocs. However I have tested the new branches, and it builds successfully when redirected there, so this should be resolved once on main).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (aedaf95) 100.00% compared to head (c934d10) 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #257   +/-   ##
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  Coverage   100.00%   100.00%           
=========================================
  Files          108       108           
  Lines         3690      3690           
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  Hits          3690      3690           

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[rccreswell]

Looks really good, we are just getting a broken link on the cEpiabm readthedocs

... inserting link_libraries(stdc++fs) in [CMakeLists.txt](cEpiabmCMakeLists.txt).