docs: pr conventional commits convention

[petermakowski]

Done

• Add information on pull request conventional commits convention

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.

Fixes

Fixes: # .

[webteam-app]

Demo starting at https://react-components-996.demos.haus