Handle compartment nomenclature

[michaelsilverstein]

BIGG names compartments as e whereas CarveMe uses C_e. Handling:

1. Infer compartment: default, throw a warning if inferred, throw an error if we can't infer
2. Force options on user: preference, but prevents unskilled users

For inference, need checkpoint to ensure that all models contain shared compartment

Unittest: on BIGG and CarveMe model

[michaelsilverstein]

Proposal: we can use the compartment for reactions model.exchanges to find the name of the extracellular compartment.

Reactions are classified as "exchange" reactions if it has no reactants or products (model.reaction.boundary = True).

Here is where model.exchanges is define: https://github.com/opencobra/cobrapy/blob/e838e5403be7243a18dc7ae10e26551cb28d21cc/src/cobra/core/model.py#L966-L972

Where model.reaction.boundary is defined: https://github.com/opencobra/cobrapy/blob/dc68ee66f6192ad02687aa2da12def3cfe36513d/src/cobra/core/reaction.py#L537-L543

Cobrapy even relies on e in compartment name: https://github.com/opencobra/cobrapy/blob/e838e5403be7243a18dc7ae10e26551cb28d21cc/src/cobra/medium/boundary_types.py#L29-L59