Automatic Subresource integrity attributes management for bundles

I'm planning to host my application static resources, bundles included, on a CDN so I started tackling the problem from the [Subresources Integrity](https://developer.mozilla.org/en-US/docs/Web/Security/Subresource_Integrity) attributes creation and management.
The basic idea is to have a new option in the aurelia.json build object that, when enabled, will trigger the following actions during the building phase:

1. Compute the hash of the bundles (except the main one)
2. Update the requirejs configuration to emit the SRI attributes with the computed hash when requesting a bundle
3. Compute the main bundle hash
4. Update the index file with the SRI attributes for the main bundle

My current solution lives [here](https://github.com/ghidello/cli/tree/feat/subresource_integrity) for now but i was wondering if this kind of feature can be useful for anyone else before thinking to make a pull request.