Feature hdf5 profile sample

[PaulJonasJost]

Hello,

i created a Reader and Writer for both Profiles and Samples.
I do need to mention that there is still some slight bug, when writing into an already existing file. It then expectes the shape to be the same as before (e.g. a profile of a parameter which ad (20,1) before is now expected to have the same shape). I do have an Idea on how to fix this but this here is already working right now. One only has to create a new file or delete the old before as of now.

[codecov-io]

Codecov Report

Merging #546 (8bc8846) into develop (e4788e7) will increase coverage by 1.24%.
The diff coverage is 24.74%.

@@             Coverage Diff             @@
##           develop     #546      +/-   ##
===========================================
+ Coverage    88.22%   89.47%   +1.24%     
===========================================
  Files           71       71              
  Lines         4443     4532      +89     
===========================================
+ Hits          3920     4055     +135     
+ Misses         523      477      -46     

Impacted Files	Coverage Δ
pypesto/store/save_to_hdf5.py	61.76% <24.00%> (-31.57%)	⬇️
pypesto/store/read_from_hdf5.py	58.88% <25.53%> (-36.46%)	⬇️
pypesto/store/hdf5.py	82.60% <0.00%> (-4.35%)	⬇️
pypesto/objective/function.py	75.00% <0.00%> (+0.92%)	⬆️
pypesto/objective/amici.py	91.56% <0.00%> (+1.20%)	⬆️
pypesto/objective/amici_util.py	75.89% <0.00%> (+1.78%)	⬆️
pypesto/objective/amici_calculator.py	91.66% <0.00%> (+3.33%)	⬆️
pypesto/optimize/optimizer.py	90.61% <0.00%> (+29.49%)	⬆️

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[dweindl]

Good to have HDF5 IO support for profiling/sampling results.

Please also include a test case writing some result, reading it back in and ensuring that it is the same as the original one.

[dweindl]

Good for me now.