BBSims - map-based simulations for B-mode analysis pipelines

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Library to produce map-based simulations with input experiment configuration compatible with Simons Observatory (LiteBIRD is being added).

The outputs are directly compatible with the inputs to BBPipe, its submodule BBPower, and BBHybrid.

Used to produce simulations for:

1. A minimal power-spectrum-based moment expansion for CMB B-mode searches
2. A hybrid map-Cℓ component separation method for primordial CMB B-mode searches

Developed by: Susanna Azzoni, David Alonso