Add link to editorconfig.org while generating .editorconfig file.

[hopeless-programmer-online]

As far as I understand, this extension provides a Generate .editorconfig button in the VSCode explorer's context menu.
If it is so, it would be very nice to insert the comment with a link to the official site in the generated file. Like this:

# see https://editorconfig.org/

root = true

[*]
indent_style = space
indent_size = 4
charset = utf-8
trim_trailing_whitespace = false
insert_final_newline = false

It might be helpful for a newcomers or unfamiliar users to spent a bit less time to google it.

[jednano]

Or to match the front page of editorconfig.org, we could use this version:

# EditorConfig is awesome: https://EditorConfig.org

Accepting PRs, but please include a patch version bump and changelog.