eliminate cargo make as a host dependency

[webern]

Description

With #14, twoliter make will be able to build bottlerocket so long as cargo make is available on the host. Eliminate this requirement.

Possibilities

• Use cargo make as a library.
• Embed cargo make as a binary in the tarball and install it
• Port all Makefile.toml functionality to native Rust functions (this would be ideal, but may take some time)

Definition of Done

When using Twoliter to build a Bottlerocket image no longer requires cargo make on the host.

Prerequisite

• twoliter make can build bottlerocket #14