Create continuous integration when branches are merged to /dev

## User Story
AS a Free Code Camp user
I want developers' code to be continuously integrated and unit tested
SO THAT I know that developers have tested their code with high standards

## Acceptance Criteria
GIVEN I am a Developer for Free Code Camp Columbus
WHEN my pull request to dev has passed the peer review and code review
AND the reviewer intiates a merge commit to the `dev` branch
THEN an automated process will run `npm ci`, `npm run build`, and `npm test`

### Implementation advice
- [Add a GitHub Action](https://github.com/FCCColumbus/cbus-web/actions/new) to create a [Building and testing Node.js](https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-nodejs) starter workflow
- To test, initiate a Pull Request into the dev branch from your feature branch.