Resolve "v0.3.0 presentation" ✨️

Closes #87 🐔️👍️
Approved-by: belazy <aarthuur01@gmail.com>
Approved-by: loutr <l.ta-ma@proton.me>
Approved-by: aalbert <augustin.albert@bleu-azure.fr>

🦀️🍰🦀️🍰🦀️🍰

* feat(presentation): Add coverage slides

* docs(tex): description of the kernel

* chore(presentation): Improve slides style

* change color

* chore(docs): corrections on the presentation

* feat(docs): ending of presentation for 0.3.0

* feat(docs): beginning of presentation for 0.3.0