Integrate the new changelog tool in the repository

[pomek]

🚀 Summary

This pull request aims to switch the changelog generator from the Git-based approach to Markdown files (as input).

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📌 Related issues

• Closes Implement the new changelog tool in ckeditor5-dev ckeditor5#18067.

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💡 Additional information

To avoid breaking changes in the ckeditor5-dev-release-tools package, I restored the removed functions (#1133) and marked them as deprecated.

[pomek]

The previous message included the duplicated entries. I fixed it in b005ce8. New changelog:

49.1.0 (June 6, 2025)

Features

• utils: Added a new function to the tools namespace: tools.commit(). See ckeditor/ckeditor5#18051.

• changelog: Initial version of the @ckeditor/ckeditor5-dev-changelog package that uses markdown files as the source of changelogs instead of Git commits. Closes ckeditor/ckeditor5#18051.

• utils: Created new namespaces: workspaces and npm.

  • workspaces exposes the following functions:
    • findPathsToPackages()
    • getPackageJson()
    • getRepositoryUrl()
  • npm exposes the following functions:
    • checkVersionAvailability()
    • manifest() - a wrapper over the packote package that prevents using any cache
    • packument() - as above.

Other changes

• release-tools: The checkVersionAvailability() and findPathsToPackages() functions exported by the @ckeditor/ckeditor5-dev-release-tools package have been moved to the @ckeditor/ckeditor5-dev-utils package.

  For backward compatibility, they are still available in the @ckeditor/ckeditor5-dev-release-tools package and will be removed in the next major release.

Released packages

Check out the Versioning policy guide for more information.

Released packages (summary)

New packages:

• @ckeditor/ckeditor5-dev-changelog: v49.1.0

Releases containing new features:

• @ckeditor/ckeditor5-dev-utils: v49.0.2 => v49.1.0

Other releases:

• @ckeditor/ckeditor5-dev-build-tools: v49.0.2 => v49.1.0
• @ckeditor/ckeditor5-dev-bump-year: v49.0.2 => v49.1.0
• @ckeditor/ckeditor5-dev-ci: v49.0.2 => v49.1.0
• @ckeditor/ckeditor5-dev-dependency-checker: v49.0.2 => v49.1.0
• @ckeditor/ckeditor5-dev-docs: v49.0.2 => v49.1.0
• @ckeditor/ckeditor5-dev-release-tools: v49.0.2 => v49.1.0
• @ckeditor/ckeditor5-dev-stale-bot: v49.0.2 => v49.1.0
• @ckeditor/ckeditor5-dev-tests: v49.0.2 => v49.1.0
• @ckeditor/ckeditor5-dev-translations: v49.0.2 => v49.1.0
• @ckeditor/ckeditor5-dev-web-crawler: v49.0.2 => v49.1.0
• @ckeditor/typedoc-plugins: v49.0.2 => v49.1.0

[pomek]

Output without the --dry-run mode:

commit 5f5641457de0793c17b0225fd810293e65ecdc35
Author: Kamil Piechaczek <pomek@users.noreply.github.com>
Date:   Fri Jun 6 16:13:06 2025 +0200

    Changelog for v49.1.0. [skip ci]

 .../20250606112657_ck_18067_new_changelog.md       | 52 -------------
 .../20250606125408_ck_18067_new_changelog.md       | 45 -----------
 .../20250606143802_ck_18067_new_changelog.md       | 45 -----------
 .../20250606153834_ck_18067_new_changelog.md       | 43 -----------
 CHANGELOG.md                                       | 88 +++++++++++++---------
 5 files changed, 54 insertions(+), 219 deletions(-)