Add support for DiT models

[xenova]

Example usage:

import { pipeline } from '@xenova/transformers';

const classifier = await pipeline('image-classification', 'Xenova/dit-base-finetuned-rvlcdip');
const url = 'https://huggingface.co/datasets/Xenova/transformers.js-docs/resolve/main/coca_cola_advertisement.png';
const output = await classifier(url);
// [{ label: 'advertisement', score: 0.9035086035728455 }]

[HuggingFaceDocBuilderDev]

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