Upgrade to cardano.nix and isolate main runtime deps (cardano-node, ogmios, kupo)

[euonymos]

Current issues:

• The version of cardano-node cannot be altered easily (see chore: bump cardano-node to 8.1.2 #1617)
• ogmios-nixos is deprecated in favor cardano.nix

Sounds like these two issues should be resolved in one go by upgrading CTL's Nix setup by switching from ogmios-nixos to cardano.nix. While doing that I believe we should be explicit about the requirement to be able to change versions of cardano-node, ogmios, and kupo independently.

cc @klntsky @aciceri @bladyjoker

[aciceri]

cc @brainrake

[aciceri]

cardano.nix already supports multiple versions of the same packages, if you tell us exactly what versions you need for everything we can add them.

Anyway what do we want to do exactly? Just refactor the flake inputs in cardano-transaction-lib using only cardano.nix? That should be doable.

[brainrake]

Let us know what versions and we'll add them to cardano.nix. We should export library functions or add an example to override the release as well.