Introduce new imageToFile API function signature

[raedle]

Summary: Introduce new media API to get save an image to a filepath.

Example with RNFS (react-native-fs) to get a valid filepath.

import { ImageUtil, media } from 'react-native-pytorch-core';
import * as RNFS from 'react-native-fs';

const image = await ImageUtil.fromURL('https://example.com/image.jpg');
const filepath = media.imageToFile(
  image,
  RNFS.DownloadDirectoryPath + '/saved_image.png',
);
image.release();

Differential Revision: D40747565

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Name	Status	Preview	Updated
playtorch	✅ Ready (Inspect)	Visit Preview	Jan 13, 2023 at 6:00AM (UTC)

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D40747565

[facebook-github-bot]

This pull request has been merged in facebookresearch/playtorch@b191b21d2b8945b344fe7bb0c4fb7ef061f4cc74.