Add release drafter

[AlexSkrypnyk]

Once #425 is implemented, it would be great to have the release drafts to be automatically created to ease the maintenance burden.

Suggesting adding a new GHA to prepare the release notes draft. Note that this will only prepare the release notes draft without actually publishing a release.

Noting that there are 2 active branches at a time (current and next Drupal core version), we can have a dual release drafter.

As a first step, we can implement release drafter for a default (10.x branch).

Once implemented, the release notes may look like this: