Foundation convenience extensions should be available in a separate product from FoundationNetworking convenience extensions

[schlaeps]

Currently in order to take advantage of any of the HTTPRequest+URL extensions, one must also bring along all of the FoundationNetworking extensions (URLRequest/URLResponse/URLSession).

FoundationNetworking adds significant dependency requirements on Linux in particular that are undesirable for simply working with the Foundation standard URL / URLComponents.

It would nice if there were a way to work with HTTPTypes within the context of Foundation only while ignoring FoundationNetworking.