👷(github) add automatic release on new tag

[Sifflex]

Purpose

We wanted to make it easier to release a new version of the application.

Proposal

Add a github workflow to automatically create a new release whenever a new tag is pushed to the repository. The release description is based on the current CHANGELOG. Since releases are associated to a tag, we added a github workflow that calls a script everytime a new tag is pushed on the repository and creates the corresponding release.