Implement option "Paste lines"

[matkovsky]

Hello there!

I would love to see the "Improved paste (paste the first three lines of the clipboard data to the three selected locations)" feature to be implemented. This would allow multiline clipboards to be pasted into multicursor locations line-by-line.

This is how it works in Sublime Text:

[jkjustjoshing]

This seems to work already in VS Code if the number of lines being pasted equals the number of active cursors. However if the number doesn't match it repeats the entire clipboard for each cursor.

[jkjustjoshing]

VS Code does not provide API access to the system clipboard microsoft/vscode#217.

They recommend using something like this https://github.com/xavi-/node-copy-paste. I'll see how feasible this is.

[jkjustjoshing]

Implemented in master, should be released before the end of #hacktoberfest

[jkjustjoshing]

v1.2.0 released with this feature.