Fewer dependencies on kbfsfuse

My use case: I never use the Keybase GUI, I use the keybase command-line tool rarely on Linux, and I never use KBFS.

My problem: Some of the keybase commands (such as keybase chat ls and keybase git create) need a working kbfsfuse running, so I have to run kbfsfuse ~/kbfs in another terminal window first to use these commands. I don't want this. I'd prefer that these commands worked without even having a kbfsfuse binary on my system.

Rationale 1: I don't want services lingering out on my system, not even temporarily, and I don't want the inconvenience of starting and stopping those services manually whenever I need something.

Rationale 2: I don't want to store many large, bloated, unnecessary binaries on my system. kbfsfuse on Linux amd64 is 46 MB. I think that much of its functionality could be integrated to the keybase tool, and it wouldn't become much larger.

Start by tracing the keybase chat ls and keybase git create commands to identify where they require a running kbfsfuse service. Determine whether those commands can work without the kbfsfuse binary or service. Done means both commands work for users who do not have kbfsfuse installed.