Make `TreeDiff` utilities available in `cardano-ledger-binary`

[Soupstraw]

Currently the test logs from the tests in cardano-ledger-binary are really hard to read. I think many of them could be improved with tree-diff, but our testing utilities for tree-diff are defined in cardano-ledger-core, which can't be a dependency of cardano-ledger-binary. Perhaps it would make sense to create a new package called cardano-ledger-test-utils that all the other testlibs can depend on.

[lehins]

I think it will be better to create a sublibrary in cardano-base package that we recently added. So, others can benefit from our testing utils as well.

It's ok to keep this ticket here for now.