image: load image using Node.js/webpack custom ESModule

[yorkie]

See https://nodejs.org/dist/latest-v15.x/docs/api/esm.html#esm_https_loader, Node.js is able to add a custom loader for ESM sugar, and boa is also using it to load Python module:

import tensorflow as tf from 'py:tensorflow';

Just figure it out that we are able to read an image in the same way:

import yorkie from 'datacook:/path/to/a/dog.png';
console.log(yorkie); // should be an instance of `datacook.Image`

/cc @WenheLI @risenW

[yorkie]

The same for tabular and text-related resources, too.

[WenheLI]

IMO, this syntax may not be compatible with browser env.
We should keep the experience of browser and node as same as possible.

[yorkie]

Hmm, IMOH it's compatible with ESM, which is supported by both Node.js and browser :)

[yorkie]

Closing because of inactive.