Add a CHANGELOG file to the template

[abelsiqueira]

Description

Such as https://keepachangelog.com/en/1.1.0/
It would be better to add one if there are supporting tools, but that is an independent question.

Related issues:

• Evaluate Changelog.jl #55
• Consider action to enforce Changelog #61

Validation and testing

No response

Motivation

No response

Target audience

This would probably be better as part of robust. Very useful for larger projects, not so much in early stages.

Can you help?

Yes