Wiki: allow pasting images into wiki pages

[ElectricRCAircraftGuy]

Look! An image!

I just hit Ctrl + V to paste it here after using a snipping tool to copy it from this page. Please allow pasting images just this easily into Wiki pages too!

It works on GitHub PRs, Issues, comments, etc, but not in the GitHub Wiki pages yet.

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The current preferred work-around is to copy and paste images into an issue or PR (or right here for that matter), then use that generated link to the image in your wiki pages.

OR, a very cumbersome and annoying alternative is to git clone your wiki repo, manually add an image into it and commit it, then link to it that way using relative links to the image. This is akin to what people are probably doing for their Jekyll-based Github Pages websites, for instance.