Chore: added empty changelog files

[martijnvdbrug]

Description

• Added empty changelog files
• Added the changelog.md files to the NPM packages

Checklist

📌 Always:

• I have set a clear title
• My PR is small and contains only a single feature. (Split into multiple PR's if needed)
• I have reviewed my own PR, fixed all typo's and removed unused/commented code

⚡ Most of the time:

• I have added or updated test cases for important functionality
• I have updated the README if needed

📦 For publishable packages:

• Have you correctly increased the version number in package.json to the next patch/minor/major?
• Have you added your changes to the changelog? See this example