Ability to paste screenshot in markdown text

[spartan4cs]

Is your feature request related to a problem? Please describe.
I'm always frustrated when i want to take the screenshot and paste in markdown

Describe the solution you'd like
A clear and concise description of what you want to happen.
i want to take the screenshot and paste in markdown
when i paste, it should create asset folder and upload that screenshot with some name and
it should use same below syntax but the url should be pointing to uploaded image
![image](url)

For more, just try to take screenshot and paste in this github markdown comment thread

[fduschka]

A private Note Repository would lead to the image not being able to load because GitHub would return 401!

Technically, this could be fixed by adding a route for assets which downloads the images using the auth token and then serves them to the editor.