[engine.trainer] Log at every epoch (closes #28)

src/ptbench/engine/trainer.py

@@ -205,6 +205,7 @@ def run(
             accumulate_grad_batches=batch_chunk_count,
             logger=tensorboard_logger,
             check_val_every_n_epoch=1,
+            log_every_n_steps=len(datamodule.train_dataloader()),
             callbacks=[LoggingCallback(resource_monitor), checkpoint_callback],
         )