Added & using prepared statements for stores

db/Database.cs

@@ -69,6 +69,18 @@ namespace HermesSocketLibrary.db
             return await command.ExecuteNonQueryAsync();
         }
 
+        public async Task<int> ExecuteTransaction(string sql, Action<NpgsqlCommand> prepare)
+        {
+            await using var connection = await _source.OpenConnectionAsync();
+            await using var transaction = await connection.BeginTransactionAsync();
+            await using var command = new NpgsqlCommand(sql, connection, transaction);
+            prepare(command);
+            await command.PrepareAsync();
+            var results = await command.ExecuteNonQueryAsync();
+            await transaction.CommitAsync();
+            return results;
+        }
+
         public async Task<object?> ExecuteScalar(string sql, IDictionary<string, object>? values = null)
         {
             await using var connection = await _source.OpenConnectionAsync();