Website to browse platform dependency data

### Summary

A website allows developers to answer their dependency questions themselves in an interactive manner. This can provide a higher level of detail than what might be contained in documentation. This could support scenarios like finding the platform dependencies of a specific NuGet package, finding all components that require a specific package, or finding the specific required package version on a specific distro version.

> Note: This is a proposed experience for .NET 6 and not yet committed.

### Goals

* Developers can interactively explore .NET's platform dependencies in order to answer their requirement questions.
* Developers have a clear understanding of which platform dependencies are required in order to build .NET from source.
* .NET contributors can easily determine which components of .NET may be affected by a CVE in a platform dependency.