[Feature] Proposed pipeline test: build outside executable against project

[tendervittles]

What feature/behavior/change do you want?

The pipeline should include an executable outside of the eksctl package that:

• Imports eksctl
• Initializes go.mod against an eksctl candidate
• Builds and runs

This need not be complicated, nor even connect to an actual EKS instance.

This is an example.

https://github.com/tendervittles/bad-eksctl

Why do you want this feature?

I have hit #8090 and #8284 when trying to import eksctl.

Both could have been easily detect before release by building an outside executable against this project.