Ajoute une table de gestion des utilisateurs

ChessCubing.Server/Users/MySqlUserProfileStore.cs

@@ -123,6 +123,11 @@ public sealed class MySqlUserProfileStore(
         ORDER BY updated_utc DESC, created_utc DESC, username ASC;
         """;
 
+    private const string DeleteProfileSql = """
+        DELETE FROM site_users
+        WHERE subject = @subject;
+        """;
+
     private readonly SiteDataOptions _options = options.Value;
     private readonly ILogger<MySqlUserProfileStore> _logger = logger;
 
@@ -285,6 +290,17 @@ public sealed class MySqlUserProfileStore(
         return await ReadProfileAsync(connection, subject, cancellationToken);
     }
 
+    public async Task DeleteAsync(string subject, CancellationToken cancellationToken)
+    {
+        await using var connection = new MySqlConnection(_options.BuildConnectionString());
+        await connection.OpenAsync(cancellationToken);
+
+        await using var command = connection.CreateCommand();
+        command.CommandText = DeleteProfileSql;
+        command.Parameters.AddWithValue("@subject", subject);
+        await command.ExecuteNonQueryAsync(cancellationToken);
+    }
+
     private static UserProfileInput NormalizeInput(AuthenticatedSiteUser user, UpdateUserProfileRequest request)
         => NormalizeInput(user.DisplayName, request);