[Feature Request]: ability to manage multiple acme accounts on single server

What problem does this feature solve or what does it enhance?

I have attempted to set up certbot to run for two accounts on a single server. Both use the same acme server, but two different accounts, as they have different certificates needed.
There are errors when attempting to use more than one account. It's also confusing, if someone corrects/changes creds that the updated ones that we pass to certbot don't get used. It's using the cached ones on disk instead.

I could see concerns about domain collision, so that's something to work out (what if two accounts trying to manage same domain).

I don't think its abnormal to have the need for multiple certificates to exist on a given node. If there's workarounds, let me know.

Proposed Solution

Multiple accounts directories, treating each individually. If domain is already existing, the latest certbot command wins. When using the certbot command, use the creds provided instead of those cached.

Alternatives Considered

Different deployment strategies than originally used, which is not really conducive and quite expensive to do on a whim.