add flutter & threads slides (#4)

Is it okay to use an intermediary page like this? 😅
Keynotes html export seems totally broken on Firefox 🙈, so I show the
HTML export and the PDF one

README.md

@@ -34,7 +34,7 @@ workshops at [Flutter & Friends 2024](https://flutterfriends.dev/):
 | Inside Jaspr: Building a Dart web framework from scratch                          | Kilian Schulte       | TBA                                                                        | [YouTube](https://www.youtube.com/watch?v=j2rODBDY0G8&t=144s)   | TBA       |                 |
 | Practical Design Patterns for Flutter Development                                 | Majid Hajian         | TBA                                                                        | [YouTube](https://www.youtube.com/watch?v=j2rODBDY0G8&t=2827s)  | TBA       |                 |
 | Embedded Flutter on Raspberry Pi 5: Simplification of Daily E-Commerce Operations | Michał Gapiński      | TBA                                                                        | [YouTube](https://www.youtube.com/watch?v=j2rODBDY0G8&t=7525s)  | TBA       |                 |
-| Flutter & Threads                                                                 | Alexandre Moureaux   | TBA                                                                        | [YouTube](https://www.youtube.com/watch?v=j2rODBDY0G8&t=10641s) | TBA       |                 |
+| Flutter & Threads                                                                 | Alexandre Moureaux   | [Slides](https://alex.moureaux.me/dev/talks/flutter-and-friends-2024-flutter-and-threads)                                                                       | [YouTube](https://www.youtube.com/watch?v=j2rODBDY0G8&t=10641s) | TBA       |                 |
 | Quick Wins - how to make your app more accessible                                 | Simon Auer           | [Slides](https://drive.google.com/file/d/1To9fqIgmHlg8FwZcIrgS3v_y16AKSeh8/view?usp=sharing)                                                                        | [YouTube](https://www.youtube.com/watch?v=j2rODBDY0G8&t=13353s) | TBA       |                 | 
 | Native Background Processing with Flutter                                         | Dominik Roszkowski   | TBA                                                                        | [YouTube](https://www.youtube.com/watch?v=j2rODBDY0G8&t=16897s) | TBA       |                 | 
 | A closer look at the blur effect in Flutter                                       | Raouf Rahiche        | [Slides+Code](https://github.com/Rahiche/a_closer_look_at_the_blur_effect) | [YouTube](https://www.youtube.com/watch?v=j2rODBDY0G8&t=19818s) | TBA       |                 |