Add dataset usage example script

dataset_example.py

@@ -0,0 +1,26 @@
+from datasets import load_dataset
+from PIL import Image
+
+
+dataset_name = "image_caption_dataset.py"
+dataset_config_name = "coco_2017"
+cache_dir = None
+keep_in_memory = False
+data_dir = "./"
+
+dataset = load_dataset(
+    dataset_name, dataset_config_name, cache_dir=cache_dir, keep_in_memory=keep_in_memory, data_dir=data_dir
+)
+
+for example in dataset["train"]:
+    print(example)
+    # with Image.open(example['image_file']) as image:
+    #     image.show()
+    break
+
+for _idx, example in enumerate(dataset["validation"]):
+    if _idx >= 5:
+        break
+    print(example)
+    with Image.open(example['image_file']) as image:
+        image.show()