Add consistency between prettier and eslint

[PaulRosset]

…lint

Description

I've add a prettier.config.js file to be sure that everyone is using the same config to apply prettier on the project.
I also added a comma-dangle property on eslint.

We also had a problem on a eslint property concerning the camelcase, so I disabled the 2 lines concerned, because it depends on the ci-env packages. So, we need to edit it first.

Motivation and Context

The yarn lint script was not working correctly.
I also wanted to add comma-dangle to improve the readability of future pull request.

This PR is closely related to the issue #246

Types of changes

Chore

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• If my change requires a change to the documentation I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I created an issue for the Pull Request