Update CHANGELOG with Emoji Log

[MarioCatuogno]

Thinking of upgrading the CHANGELOG with the EmojiLog.

The new meanings would be something like this:

• 📦 NEW: Emoji meaning: A "package emoji" — which can contain new stuff.
• 👌 IMPROVE: Emoji meaning: An "OK Hand emoji" — which is meant to appreciate an improvement.
• 🐛 FIX: Emoji meaning: A "bug emoji" — which means there was a bug that got fixed.
• 📖 DOCS: Emoji meaning: A "book emoji" — which means documentation or notes just like in a book.
• 🚀 RELEASE: Emoji meaning: A "rocket emoji" — which is meant to show a new release/launch.
• ✅ TEST: Emoji meaning: A "check emoji" — which says some test were run successfully.

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Maybe change also the issue labels to this.

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Split the release changelog into categories, like here.

[MarioCatuogno]

Thinking of using these badge styles.