Create a release script

[Bjorn Lu]

I am finally tired of releasing things manually 😄

Currently, when making new changes, update the relevant CHANGELOG.md with a description of the change under the ## Unreleased header (Create one if not available).

When releasing the script should:

1. Scan all packages CHANGELOG.md for new changes to be published
2. Ask which package to publish (exit if none)
3. Select a package
4. Ask major/minor/patch type
5. Select a type
6. Update package.json number
7. Update CHANGELOG.md ## Unreleased to ## <version> (YYYY-MM-DD)
8. git commit
9. pnpm publish
10. Create a new git tag
11. Collect CHANGELOG.md and release to GitHub Release. (CLI) (Note: check if it's safe to publish local commit SHA to remote ahead of time)
12. Done!