Example static key provider

[!WARNING] This file is not an end-user documentation, it is intended for developers. Please follow the user documentation on the OpenTofu website unless you want to work on the encryption code.

[!WARNING] This provider is not intended for production use and merely serves as a simple example!

This folder contains a key provider that accepts a static, hex-encoded key. Its only purpose is to serve as a provider for tests and as a demonstration on implementing a key provider.