Each published package should have its own GH release and generated changelog.

[lukehb]

Component your feature request relates to

• This repo

Problem your feature solves? Please describe.
Currently the entire repository has Github releases with accompanying changelogs; however, this repo is a mono-repo that contains many packages, which themselves are published. However, these packages do not have accompanying Github releases and changelogs.

Describe the solution you'd like
Each published package in this repo should have an accompanying:

• Github release
• Generated changelog

Additional context
This issue was discussed in #313 but has been formalised here.

[lukehb]

Since #347 we now automatically create tags each time a package version is incremented.

With this tagging of packages we should now be able to also extend the publish GH actions to create a GH release (of just that relevant subdirectory) with generated changelogs.