flesh out native query cli interface

[hallettj]

This is work an an in-progress feature that is gated behind a feature flag, native-query-subcommand.

This change does a few things to make the user experience for working with native queries much nicer:

• When creating a native query, a nicley-formatted report is displayed showing the inferred parameter and result types.
• Infers a name for the native query based on the filename for the input aggregation pipeline if no name is specified.
• Adds list, show, and delete subcommands to complement create. The show subcommand outputs a format similar to the output from a successful create command.