Add ExperimentList.all_same_type().

[toastisme]

This is syntactic sugar to check if all experiments return the same Experiment.get_type(). Useful in a lot of places where algorithms are not designed to work with a mixture of types (e.g. stills and rotation experiments).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 41.59%. Comparing base (9e26747) to head (0752d54).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #758      +/-   ##
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+ Coverage   41.56%   41.59%   +0.02%     
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  Files         189      189              
  Lines       17066    17074       +8     
  Branches     3273     3276       +3     
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+ Hits         7094     7102       +8     
  Misses       9318     9318              
  Partials      654      654