Implement pytorch dataset for own collected data

src/train.py

@@ -13,7 +13,7 @@ import torch.optim as optim
 from torch.utils.data import DataLoader
 from torchvision import transforms
 
-from dataset import WLASLDataset
+from datasets.wlasl_dataset import WLASLDataset
 from identifiers import LANDMARKS
 from keypoint_extractor import KeypointExtractor
 from model import SPOTER