feat: Implement dynamic Oscar year selection

This commit introduces the ability to select and manage the active Oscar year. This change affects page titles, API requests, and data filtering across the application, ensuring that all views and statistics are relevant to the chosen year.

Co-authored-by: mathieumoran1 <[email protected]>

public/user-stat.html

@@ -3,7 +3,7 @@
 <head>
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
-  <title>Pool Oscars 2026 - Statistiques des utilisateurs</title>
+  <title>Pool Oscars - Statistiques des utilisateurs</title>
   <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet">
   <style>
     .navbar-custom {