create a kits workspace

[webern]

Description

Create a workspace for Bottlerocket kits. See https://github.com/bottlerocket-os/twoliter/tree/develop/docs/design#readme for more info on the design.

Create a buildsys build-kit command and a Makefile.toml target cargo make kit.
Include at least one core package in the initial kit.

Definition of Done

When cargo make kit creates a kit container image with at least one package in it per the Twoliter design document.

Depends on:

• use twoliter to build bottlerocket #3178

id: kitspace
epic: kits

Related to #2669

[webern]

We are apparently waiting for the breakup of the monorepo to do this. Perhaps this issue could be considered done when an experiment has shown that the bottlerocket-core-kit can be built, even if we are going to merge it into the monorepo.