Add @changesets/cli

[WGB5445]

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[Copilot]

Pull Request Overview

This PR adds Changesets tooling to manage versioning and releases for the project. It replaces the existing manual changelog approach with an automated system that generates changelogs and handles version bumping.

• Adds @changesets/cli as a dev dependency with supporting npm scripts
• Introduces comprehensive release documentation and configuration
• Migrates existing changelog entry to the new changeset format

Reviewed Changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
package.json	Adds @changesets/cli dependency and release-related npm scripts
RELEASE.md	Comprehensive documentation for the new changeset-based release process
CHANGELOG.md	Removes old manual changelog content
.changeset/violet-doodles-film.md	Migrates existing changelog entry to changeset format
.changeset/config.json	Configuration for changeset behavior and settings
.changeset/README.md	Auto-generated documentation about changesets

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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