allow any object with render method to be used for label distribution

[tlambert03]

fixes #82

this lets any object that implements a render() method be used as a fluorophore distribution object (via duck typing). which should make things like @melisande-c's kymograph generation easier to use without using from_ground_truth

class MyCustomDistribution:
    def render(self, space, xp: ms.NumpyAPI | None = None):
        # ...
        return space

sim = ms.Simulation(
    truth_space=ms.ShapeScaleSpace(shape=(64, 128, 128), scale=(0.2, 0.1, 0.1)),
    output_space={"downscale": 1},
    sample=ms.Sample(labels=[MyCustomDistribution()]),
)

it also exposes BaseDistribution publicly ... so if you prefer to subclass (rather than rely on Protocols and duck-typing) then you can.

@melisande-c, let me know if this would help out in your case

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.90%. Comparing base (9669067) to head (cd9ecff).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #83      +/-   ##
==========================================
+ Coverage   84.82%   84.90%   +0.08%     
==========================================
  Files          47       47              
  Lines        3130     3147      +17     
==========================================
+ Hits         2655     2672      +17     
  Misses        475      475              

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[melisande-c]

@tlambert03 Amazing! Thanks so much, this is what I exactly what I meant. I will let you know how integrating it with my work goes, it might still be a little tricky with the time component, I might be asking some questions soon! 😄

[melisande-c]

@tlambert03 just to let you know, I successfully created my own custom distributions! and it was pretty easy to move the time loop outside of the the distribution initialisation