Buildpack API 0.10: Stack Removal #559
Description
Describe the Enhancement
Implement this CNB RFC to remove support for stack id buildpack uses API 0.10.
The primary change here is the environment variables that are available to the buildpack as well as the structure of the buildpack.toml.
There will also need to be a change to the stacks to add the information needed to set CNB_TARGET_ID, see the platform spec for more details.
Motivation
Having support for the latest API versions is important to support not only our own project use cases, but those of our users as well.