Add new FX layer and a nuke animation (#807)

## Description:

Changes:
- Added an AnimatedSprite class to handle spritesheets
- New FX layer, displaying cosmectics effects
- New Nuke FX: an animated sprite explosion, and a shockwave effect
- New "Special effects" setting, toggle to deactivate the FX layer for
lower-end hardware / personal taste


#### Note that the animation is a placeholder. It should be replaced
when a better looking one is available.

- Nuke:


https://github.com/user-attachments/assets/6eff1d0d-5081-47ad-932f-2bfcda72cb3c


- Mirv:


https://github.com/user-attachments/assets/3bc891b4-449c-4acb-8e24-e237b423c2a9


- SAM are also using the same Nuke animation. To be improved with a
custom FX:


https://github.com/user-attachments/assets/d65addce-5890-42c2-81e0-3eaa79ed87f3

## Performances:

Excellent since it's not manipulating the underlying imagedata directly.
Profiling during a MIRV with 100's of animations:

![image](https://github.com/user-attachments/assets/3477c963-d10f-493b-bcb1-93b7990d3edb)



### New settings:

- main menu:


![image](https://github.com/user-attachments/assets/5b1127bb-3b89-4c06-b519-fb173301d9fd)

- In game:


![image](https://github.com/user-attachments/assets/ba899253-a7cf-4d1c-8801-da41d2b1536b)


## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [x] I understand that submitting code with bugs that could have been
caught through manual testing blocks releases and new features for all
contributors

## Please put your Discord username so you can be contacted if a bug or
regression is found:

IngloriousTom

resources/lang/en.json

@@ -227,6 +227,8 @@
     "dark_mode_desc": "Toggle the site’s appearance between light and dark themes",
     "emojis_label": "😊 Emojis",
     "emojis_desc": "Toggle whether emojis are shown in game",
+    "special_effects_label": "💥 Special effects",
+    "special_effects_desc": "Toggle special effects. Deactivate to improve performances",
     "anonymous_names_label": "🥷 Hidden Names",
     "anonymous_names_desc": "Hide real player names with random ones on your screen.",
     "left_click_label": "🖱️ Left Click to Open Menu",

resources/lang/fr.json

@@ -213,6 +213,8 @@
     "dark_mode_desc": "Basculer l'apparence du site entre les thèmes clairs et sombres",
     "emojis_label": "😊 Émojis",
     "emojis_desc": "Afficher/Masquer les émoticônes dans le jeu",
+    "special_effects_label": "💥 Effets spéciaux",
+    "special_effects_desc": "Affiche les effets spéciaux - Désactivez pour améliorer les performances",
     "anonymous_names_label": "🥷 Noms masqués",
     "anonymous_names_desc": "Cacher le vrai nom des joueurs avec des noms aléatoires sur votre écran.",
     "left_click_label": "🖱️ Clic gauche pour ouvrir le menu",