Add Span overload for Socket.ReceiveMessageFrom

[geoffkizer]

We apparently missed this one in #938.

Proposed API

namespace System.Net.Sockets
{
    public partial class Socket : IDisposable
    {
        // existing: public int ReceiveMessageFrom(byte[] buffer, int offset, int size, ref System.Net.Sockets.SocketFlags socketFlags, ref System.Net.EndPoint remoteEP, out System.Net.Sockets.IPPacketInformation ipPacketInformation);

        public int ReceiveMessageFrom(Span<byte> buffer, ref System.Net.Sockets.SocketFlags socketFlags, ref System.Net.EndPoint remoteEP, out System.Net.Sockets.IPPacketInformation ipPacketInformation);
    }

[ghost]

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[karelz]

Triage: Should be simple to do once the API is formally reviewed.

[bartonjs]

Video

Looks good as proposed

namespace System.Net.Sockets
{
    public partial class Socket : IDisposable
    {
        public int ReceiveMessageFrom(Span<byte> buffer, ref System.Net.Sockets.SocketFlags socketFlags, ref System.Net.EndPoint remoteEP, out System.Net.Sockets.IPPacketInformation ipPacketInformation);
    }
}