an explanation and little tut of ssh -W and how it works.

[nhooyr]

There isn't much information on ssh -W online and its kind of confusing, just a little tut to help understand how it works. I'll add in diagrams later to help things make even more sense.

Diagrams similar to https://github.com/aubble/goTunneLS#normal-connections

[kennylevinsen]

Thanks for the very thorough description! I wrote a less detailed one before I saw your PR...

Can you check what I wrote? Just to make sure if it makes sense, and describes the "issue" enough. I'm thinking of maybe adding ssh -W detailed descriptions (yours) to the wiki, rather than the README, as the README might be nicer in more consumable sizes, with the wiki then going into detail as needed. Does that make sense?

[nhooyr]

makes sense, I'll look over your explanation.