Request: Maintain a list of supported versions/hardforks of cardano-node

[junderw]

Every time a new release appears on the oura repository, we have to look at each change, then look at upcoming hard forks on cardano-node and make sure that:

1. The new post-hardfork-supporting cardano-node is supported by the new oura version.
2. The new oura version is required for the hardfork. (ie. can we just upgrade the cardano-node without re-compiling the Rust binary that uses oura)

It would be nice to know: "ok, to prepare for the hardfork we need to upgrade cardano-node to X and oura to Y. Good." or "ok, all we need to upgrade is cardano-node, oura should work as-is" instead of every time reading the source code and seeing if it lines up with the breaking changes added to the hardfork on the cardano-node side.