Added Tournament List and detail Page

frontend_splatournament_manager/lib/widgets/available_tournament_list.dart

@@ -0,0 +1,25 @@
+import 'package:flutter/material.dart';
+import 'package:frontend_splatournament_manager/pages/tournament_detail_page.dart';
+
+class AvailableTournamentList extends StatelessWidget {
+  const AvailableTournamentList({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Expanded(
+      child: ListView.builder(
+        itemCount: 5,
+        itemBuilder: (context, index) {
+          return ListTile(
+            leading: Icon(Icons.abc),
+            title: Text("TITLE"),
+            subtitle: Text("Description"),
+            onTap: () {
+              Navigator.push(context, MaterialPageRoute(builder: (context) => TournamentDetailPage(),));
+            },
+          );
+        },
+      ),
+    );
+  }
+}