Add meta name=generator tag to identify page is build using eleventy

[akmittal]

Is your feature request related to a problem? Please describe.
Add a feature to identify that a page is build using eleventy.

Describe the solution you'd like
Add a <meta name="generator" content="eleventy"> to all the build pages. generator meta is a HTML5 standard https://html.spec.whatwg.org/multipage/semantics.html#standard-metadata-names

Describe alternatives you've considered
_

Additional context
Almost all static site generator like Hugo, Jekyll, hexo, and other tools like WordPress support it.

If this is something eleventy plan to include, I can work on a pull request for change.

[nhoizey]

There is already an issue for this: #1217

[akmittal]

Closing this one then.

[Ryuno-Ki]

@akmittal I'd welcome if you would open a new issue over at my repo.
Currently quite busy, but I'd have everything I need once I can pick it up again.

[zachleat]

Cross posting the solution for this shipping soon #2293 (comment)