Canonical FSH for use in FSH tab for IGs

There has been some discussion about the possibility of including a FSH tab alongside the other tabs on resource pages in IGs. There are multiple ways of going about this, one of which would be using GoFSH to generate the FSH that is included in the tab. This approach, however, might require a special processing mode that allows GoFSH to target a specific resource (e.g., a profile) and generate FSH for just that resource plus the aliases it uses and any inline resources it refers to (if applicable).

More discussion is needed to determine if this is even a good idea -- so we should not start work on it yet.

See: https://chat.fhir.org/#narrow/stream/179166-implementers/topic/fsh.20in.20IG/near/425872875