Consider using ~/.babashka/bbin directory

[borkdude]

We already store pods in ~/.babashka/pods. I think it would make sense to use the ~/.babashka/bbin directory. This saves creating another bb-related directory on the top level of a user directory.

Check the pods project how this directory is detected. It respects XDG_ environment variables.

cc @rads @bobisageek

[rads]

Sounds good to me.

[rads]

Forgot to add the XDG stuff before closing this, I'll add this next.