Provide template for a CLI-only application

[CloudNiner]

Many applications we write are CLI tools and the abstractions provided by https://github.com/azavea/azavea.g8/blob/master/src/main/g8/application/src/main/scala/%24package__packaged%24/api/commands/Commands.scala are useful for those types of applications as well.

It would be awesome to have one of two things:

1. A separate g8 template that configures a CLI app without having to remove all the extra stuff from this one.
2. A mode in this g8 template that does the same as (1)

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.