adding the DESI BAO likelihood

[martin-millon]

This is a draft for now. I am missing :

• automatic tests

• handling of the CosmoInterp class (cosmology class must have a H(z) function to be compatible with the BAO likelihood) (return an error for the moment)

• r_d computation (instead of sampling from a flat prior). This requires some early physics computation, which depends on omega_b and omega_gamma. This is probably unnecessary if no information from BBN or CMB is provided.(return an error for the moment)

This is tested here: https://github.com/TDCOSMO/7LensMilestone/blob/main/Likelihoods/BAOLikelihood/test_sampling_DESI_DR2.ipynb

It reproduces the DESI DR2 results in w0waCDM, in combination with Pantheon+.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.12%. Comparing base (38e5159) to head (03e0655).
Report is 14 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #50      +/-   ##
==========================================
+ Coverage   99.09%   99.12%   +0.03%     
==========================================
  Files          51       54       +3     
  Lines        2752     2848      +96     
==========================================
+ Hits         2727     2823      +96     
  Misses         25       25              

Files with missing lines	Coverage Δ
hierarc/Likelihood/BAOLikelihood/bao_likelihood.py	100.00% <100.00%> (ø)
.../Likelihood/BAOLikelihood/bao_likelihood_custom.py	100.00% <100.00%> (ø)
hierarc/Likelihood/BAOLikelihood/desi_dr2.py	100.00% <100.00%> (ø)
hierarc/Likelihood/cosmo_likelihood.py	96.49% <100.00%> (+0.45%)	⬆️
hierarc/Likelihood/hierarchy_likelihood.py	96.95% <100.00%> (ø)
hierarc/Likelihood/transformed_cosmography.py	100.00% <ø> (ø)
hierarc/Sampling/ParamManager/cosmo_param.py	100.00% <100.00%> (ø)
hierarc/Sampling/ParamManager/param_manager.py	100.00% <ø> (ø)

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[sibirrer]

Looks great, thank you @martin-millon. I have a minor comment and hope the tests can be improved

[martin-millon]

@sibirrer, this is ready to be merged (with the caveat that you have to sample r_d and that CosmoInterp can't be used).

[sibirrer]

Thank you @martin-millon !