Add shared issue tracker configuration

[pyby]

Description

The project information can be found in issue / PR on the open source GitHub repository, but also in the closed Jira project at SRGSSR.
We can share the issue tracker configuration for new colleagues.

Changes Made

• add the shared .issuetracker file, created by Fork Mac app.

Checklist

• I have followed the project's style guidelines.
• I have performed a self-review of my own changes.
• I have made corresponding changes to the documentation.
• My changes do not generate new warnings.
• I have added tests that prove my fix is effective or that my feature works.
• I have reviewed the contribution guidelines.