Add changelog page with visual timeline

[AmitoVrito]

Description

Create a beautiful changelog page with a visual timeline.

What to do

• Show each version as a card with version number, date, key features, type badge
• Pull data from CHANGELOG.md or maintain separately
• Add to navbar

[AmitoVrito]

Thanks for your interest! I will assign it to you. Before you start, could you give the repo a ⭐ on the main repo (https://github.com/SynapseKit/SynapseKit)? It really helps with visibility for a new project. Looking forward to your PR!