feat: add Settings tab with provider management and language preferences

- Implemented AppSettings model and table using SQLModel.
- Created Settings router with endpoints for preferences and provider toggling.
- Added Settings tab to the UI with real-time health status of providers.
- Integrated language and provider filtering into anime and series search logic.
- Updated templates to respect user-defined settings.

templates/components/series_card.html

@@ -1,4 +1,4 @@
-{% macro series_card(series, in_watchlist=False) %}
+{% macro series_card(series, in_watchlist=False, lang='vf') %}
 <div class="anime-card" id="series-{{ series.url | hash }}">
     <div class="anime-poster">
         <img src="{{ series.cover_image or 'https://placehold.co/400x600/161625/ff6b6b?text=No+Image' }}" 
@@ -9,7 +9,7 @@
         <div class="anime-overlay">
             <div class="overlay-buttons">
                 <button class="btn btn-primary btn-circle" 
-                        hx-get="/api/anime/episodes?url={{ series.url | urlencode }}&lang=vf" 
+                        hx-get="/api/anime/episodes?url={{ series.url | urlencode }}&lang={{ lang }}" 
                         hx-target="#player-container"
                         hx-swap="innerHTML"
                         title="Play">
@@ -21,18 +21,19 @@
     <div class="anime-info">
         <h3 class="anime-title" title="{{ series.title }}">{{ series.title }}</h3>
         <div class="anime-meta-tags">
-            <span class="badge">FS7</span>
+            <span class="badge">{{ series.provider_id | upper if series.provider_id else 'FS7' }}</span>
+            <span class="badge" style="color: var(--primary)">{{ lang | upper }}</span>
         </div>
         
         <div class="anime-card-buttons">
             <button class="btn btn-primary btn-small" 
-                    hx-get="/api/anime/episodes?url={{ series.url | urlencode }}&lang=vf" 
+                    hx-get="/api/anime/episodes?url={{ series.url | urlencode }}&lang={{ lang }}" 
                     hx-target="#player-container"
                     hx-swap="innerHTML">
                 <i class="fas fa-eye"></i> <span>Regarder</span>
             </button>
             <button class="btn btn-secondary btn-small" 
-                    hx-get="/api/anime/episodes?url={{ series.url | urlencode }}&lang=vf" 
+                    hx-get="/api/anime/episodes?url={{ series.url | urlencode }}&lang={{ lang }}" 
                     hx-target="#player-container"
                     hx-swap="innerHTML">
                 <i class="fas fa-download"></i> <span>Télécharger</span>
@@ -42,7 +43,7 @@
         {% if not in_watchlist %}
         <button class="btn btn-secondary btn-small btn-block"
                 hx-post="/api/watchlist"
-                hx-vals='{"anime_url": "{{ series.url }}", "anime_title": "{{ series.title }}", "provider_id": "fs7", "lang": "vf"}'
+                hx-vals='{"anime_url": "{{ series.url }}", "anime_title": "{{ series.title }}", "provider_id": "{{ series.provider_id or 'fs7' }}", "lang": "{{ lang }}"}'
                 hx-swap="none"
                 hx-on::after-request="this.innerHTML='<i class=\'fas fa-check\'></i> Suivi'; this.disabled=true; this.classList.add('followed')">
             <i class="fas fa-plus"></i> Watchlist