SendPacket versus ReadOnlySpan versus array of bytes

[SebMichaud]

Hi,
Would it be possible to expose a method to convert a byte array to a ReadOnlySpan ?
Or would it be possible to add a second SendPacket method with a byte array as en inout instead of a ReadOnlySpan ?
I work with a langage that does not allow to create a "ref struct".
If I remember well the previous version of sharppcap had a byte array as an input of the SendPacket method that was very simple to use for me.
Thanks

[kayoub5]

@SebMichaud you could open a PR with the proposed change