Phase 3: HTMX & Alpine.js integration, router refactoring, and UI modernization

- Modernized the frontend with HTMX for server-driven UI and Alpine.js for client state.
- Refactored anime, player, and recommendation logic into modular routers.
- Updated README.md to reflect the latest project state and technologies (v2.4).
- Added Plyr.io for an improved streaming experience.
- Improved project structure with componentized templates.
- Added Playwright and Vitest configuration for frontend testing.

templates/components/releases_list.html

@@ -0,0 +1,11 @@
+{% from "components/anime_card.html" import anime_card %}
+
+{% if releases %}
+    {% for anime in releases %}
+        {{ anime_card(anime) }}
+    {% endfor %}
+{% else %}
+    <div class="empty-state">
+        <p>Aucune sortie récente trouvée.</p>
+    </div>
+{% endif %}