[chore] Improve release tooling

[slax57]

Problem

A large part of the react-admin release process is manual, thus cumbersome and prone to errors.

Solution

Further automate the release process.

• Generate and reorder the changelog entries automatically
• Use Github API to close milestone and create new milestone
• Use Github API to create Github Release and copy the changelog
• Script these steps and include them in the npm lifecycle

Out of scope

Some release steps are not automated yet (due to time constraints).
Examples:

• running the EE tests
• updating the docs
• updating the create-react-admin dependencies

How To Test

Unfortunately it's very cumbersome to test the whole process end-to-end.

Thus, I recommend testing it unitarily instead.

These scripts support a RELEASE_DRY_RUN env variable allowing to skip all mutations to git, GitHub or npm.

First, create a .env file from the .env.template file and fill it in with your Github token.

Then:

To test the pre-release steps: RELEASE_DRY_RUN=true make release
To test the pre-publish steps: cd packages/react-admin && RELEASE_DRY_RUN=true yarn run prepublishOnly
To test the post-publish steps: cd packages/react-admin && RELEASE_DRY_RUN=true yarn run postpublish

Additional Checks

• The PR targets master for a bugfix, or next for a feature

[djhi]

I think we should agree on a directory structure and do this automatically

[djhi]

This is really cool!

[fzaninotto]

demo is there twice