ci: add release preview action

[huwshimi]

Done

• Itemised list of what was changed by this PR.

QA

Storybook

To see rendered examples of all react-components, run:

yarn start

QA in your project

from react-components run:

yarn build
npm pack

Install the resulting tarball in your project with:

yarn add <path-to-tarball>

QA steps

• Steps for QA.

Percy steps

• List any expected visual change in Percy, or write something like "No visual changes expected" if none is expected.

Fixes

Fixes: # .

[webteam-app]

Demo

Jenkins

demos.haus

[github-actions]

This PR is being prevented from merging because it needs to be reviewed on Percy.

Go to Percy, find the build relevant to this PR and check if it looks as expected.

Once it's approved, add the label Review: Percy +1 to this PR.

[huwshimi]

It doesn't look like this can be done on PRs from forks.