chore: new release script

[runspired]

Replaces our old publish script. There will be some follow up needed.

Things to follow up on:

• we can publish types using the private strategy, but alpha currently fails for some packages as they violate the constraints. Either we need to fix the packages or adjust the constraint logic.
• because versions are no-longer lockstep, we lose the ability to pass in an exact version to use to the script. This makes the "beta-mirror-canary" workflow no longer viable, and will occasionally make publishing over a prior release harder. We can either manually adjust versions or (more likely) we should add resolution logic that can determine how to bump from any given starting primary "from" version by looking up the associated package versions of that release.
• we don't handle changelog automation yet
• beta publishing is not automated yet