tec: Add support for h-feeds

[marienfressinaud]

Pull request checklist:

• [ ] code is manually tested
• [ ] interface works on both mobiles and big screens
• [ ] accessibility has been tested
• [ ] tests are updated
• [ ] French locale is synchronized
• [ ] documentation is updated (including comments, commit messages, migration notes, …)

If you think one of the item isn’t applicable to the PR, please check it anyway and precise N/A next to it.