Decision: What is the right configuration library for a project?

Please share your thoughts and opinion, remember to mind the [vendor choose principles](https://github.com/bestpractices/best-practice-starter/blob/main/docs/vendor-pick-guidelines.MD).

[The supporting decision table is here](https://github.com/bestpractices/best-practice-starter/blob/main/docs/decisions/configuration-library.MD)