Support driver shortname aliases in dbc commands

[ianmcook]

This is the other side of https://github.com/columnar-tech/cdn/issues/4.

If the user does dbc install <alias>, it should use the mapping defined in the CDN YAML manifest to figure out what driver to install, and create a copy of the TOML driver manifest that's named <alias>.toml that points to that driver.

TBD how other commands like dbc search should handle aliases.

[ianmcook]

If we choose to build this, we could use the aliases and mappings in https://github.com/adbc-drivers/name-mappings