Proposal: Add Changelog in generated docs

[vipulgupta2048]

Originally the idea was to have Changelogs be part of docs: https://6072976c.balena-fin.pages.dev/changelog
This was removed in #23

Why?

• Changelogs didn't have closing tags for several elements leading to docusaurus unhappy
• Changelogs had markdown links breaking leading to errors on build

With the immutable nature of Changelogs, it's very hard to change existing Changelogs to follow the latest template that have since rectified some of these issues. We can talk more about how to bring these back in a way where it's less breaking changes on build time.

Zulip: https://balena.zulipchat.com/#narrow/stream/345882-_help/topic/Where.20are.20changelogs.20created.3F