ci: run only github actions affected by PR

[alexprudhomme]

https://coveord.atlassian.net/browse/KIT-4301

Using a NX command, we can determine what projects are affected by the files changed. We can then add a condition to every github action that will check if one of its dependant project is affected.

Example :

This typedoc action builds typedoc for headless & headless-react. If one of those is in the projects affected, it will run it. If not, it will skip it.

  typedoc:
    name: 'Build typedoc'
    needs: affected
    if: contains(needs.affected.outputs.projects, 'headless') || contains(needs.affected.outputs.projects, 'headless-react')

Please review each action to make sure it has the right projects in the condition.

[developer-experience-bot]

Pull Request Report

PR Title

✅ Title follows the conventional commit spec.

Live demo links

• Storybook

• Playwright report

Bundle Size

File	Old (kb)	New (kb)	Change (%)
case-assist	249.8	249.8	0
commerce	362.7	362.7	0
search	420.9	420.9	0
insight	412	412	0
recommendation	260.7	260.7	0
ssr	414.5	414.5	0
ssr-commerce	379.2	379.2	0

[louis-bompart]

@erocheleau, do you remember some of the tests that you ran, just so we could try them out