Ci/add package release api and build from cache

[anthonyronda]

Adds the ability to use this API in CI

https://foundryvtt.com/article/package-release-api/

and re-enables building from cache in CI after this fix

https://github.com/League-of-Foundry-Developers/foundry-vtt-types/pull/2398

(League's Foundry Types has a husky dependency, and husky wants to run scripts upon install–we don't want it to–and it used to error out our build script because it can't find the working directory from its cached directory)

[anthonyronda]

Using this to preserve environment variables between steps https://docs.github.com/en/actions/learn-github-actions/variables#about-environment-variables