Merge mlclient, kbclient, lariclient repos into this one

[tjd2002]

I just figured out that we are still pulling in code from magland/{mlclient,kbclient,lariclient}. This makes it hard to make consistent changes across the codebase. For example, kbclient was not updated to use the new location of the mountainlab database. We should probably merge these into a monorepo. There are tools to manage these (e.g. https://github.com/lerna/lerna), but that might be overkill.

[alexmorley]

Afaik those repos aren't used by anything else at the moment so pulling them in here is probably my a good call!