Adding packages, moving ast-tools to its package

[hansl]

Packages will be published along with the CLI, in their different npm packages.

The goal is to streamline the dependencies so they become smaller, and each package can be used without using the cli.

[hansl]

Please note that before the next release, we will have to make a new package.json for the CLI itself.

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}