text: Title: pycharm does not detect proprety from DocumentArray
  Body: ```python
  from docarray import BaseDocument, DocumentArray
  from docarray.typing import TorchTensor
  
  import torch
  
  class Image(BaseDocument):
      tensor: TorchTensor[3, 224, 224]
  
  batch = DocumentArray[Image](
      [Image(tensor=torch.zeros(3, 224, 224)) for _ in range(10)]
  )
  
  batch.tensor # here pycahrm will complain
  ```
  
  With Document (and pydantic) we don't have this problem
  ![Screenshot from 2023-03-15 10-43-15](https://user-images.githubusercontent.com/55492238/225270735-c11a0ebb-c5d6-49a0-9956-9fc5b4090726.png)
  
  
  
  We need to find a way (like in pandas) so that pycharm and other tool does not complain