Can we make this a metapackage?

Nobody has claimed this yet.

Having this as a meta package helps keep the `composer.json` file clean and clutter-free.

```
"magento/module-sample-data": "^100.4"
```
vs

```
"magento/module-bundle-sample-data": "100.4.*",
"magento/module-catalog-rule-sample-data": "100.4.*",
"magento/module-catalog-sample-data": "100.4.*",
"magento/module-cms-sample-data": "100.4.*",
"magento/module-configurable-sample-data": "100.4.*",
"magento/module-customer-balance-sample-data": "100.4.*",
"magento/module-customer-sample-data": "100.4.*",
"magento/module-downloadable-sample-data": "100.4.*",
"magento/module-gift-card-sample-data": "100.4.*",
"magento/module-gift-registry-sample-data": "100.4.*",
"magento/module-grouped-product-sample-data": "100.4.*",
"magento/module-msrp-sample-data": "100.4.*",
"magento/module-multiple-wishlist-sample-data": "100.4.*",
"magento/module-offline-shipping-sample-data": "100.4.*",
"magento/module-product-links-sample-data": "100.4.*",
"magento/module-review-sample-data": "100.4.*",
"magento/module-sales-rule-sample-data": "100.4.*",
"magento/module-sales-sample-data": "100.4.*",
"magento/module-swatches-sample-data": "100.4.*",
"magento/module-target-rule-sample-data": "100.4.*",
"magento/module-tax-sample-data": "100.4.*",
"magento/module-theme-sample-data": "100.4.*",
"magento/module-widget-sample-data": "100.4.*",
"magento/module-wishlist-sample-data": "100.4.*",
"magento/sample-data-media": "100.4.*"
```

And also publish this under `repo.magento.com`? So that we can directly do a `composer require magento/module-sample-data` instead of running the `bin/magento sampledata:deploy` command.

Review the repository's composer.json and the bin/magento sampledata:deploy command first, then trace how the listed sample-data packages are currently assembled. Done means the sample data can be installed through the proposed metapackage and is published under repo.magento.com without requiring the command.

Written by the indexing model from the issue text.