Bacco lbias

[matteozennaro]

Implementation of the nonlinear galaxy bias prescription as in the hybrid Lagrangian bias expansion from the baccoemu emulator library. Followed closely the structure and conventions of the lpt module.

[coveralls]

Pull Request Test Coverage Report for Build 7019989337

• 173 of 173 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.07%) to 97.447%

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Totals
Change from base Build 6851843990:	0.07%
Covered Lines:	6489
Relevant Lines:	6659

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💛 - Coveralls

[damonge]

I approved, so feel free to merge, however, one extra comment in case you'd like to address it: to a non-expert, it won't be clear what this new class does that is different from the velocileptors-based calculator. You don't have to use HEFT ;-), but perhaps worth saying something about how this methodology is different from LPT?