chore: ignore changelog by prettier

[LukasHirt]

No description provided.

[Copilot]

Pull Request Overview

This PR adds changelog generation automation to the project by integrating changelogen, a tool for generating changelogs from git history. The changes configure the project to automatically generate and maintain a CHANGELOG.md file while excluding it from code formatting.

• Adds a new npm script for changelog generation using changelogen
• Configures the release workflow to use the new changelog generation script
• Excludes the generated CHANGELOG.md from Prettier formatting to prevent conflicts

Reviewed Changes

Copilot reviewed 1 out of 1 changed files in this pull request and generated no comments.

File	Description
package.json	Adds changelog:generate script for automated changelog generation
CHANGELOG.md	Creates initial changelog with project history
.prettierignore	Excludes CHANGELOG.md from Prettier formatting
.github/workflows/release.yaml	Updates release workflow to use new changelog script

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