refactor: move shared code to public tvs-lib crate

[tombh]

No description provided.

[ryan-berger]

+600 is hard to review, but from what I gather this is mostly copying a bunch of code over, with some extra utilities that need sharing which makes this an easy +1.

From a philisophical point of view, I think that we are going to have some tension with this library-ification PRs for a bit before we standardize the interface. Right now we want to make as many things common as needed/as we see fit, but as future library maintainers we will want to hide as much functionality behind our interface as possible.

So long as we can make lots of breaking changes, I think we're good to go.

[tombh]

Yeah, it's just moving code around.

Right now we want to make as many things common as needed/as we see fit, but as future library maintainers we will want to hide as much functionality behind our interface as possible.

Yeah, totally agree.