[Request] Add Marker Clusterer

[vladrusu]

Library name: Marker Clusterer
Git repository url: https://github.com/googlemaps/js-marker-clusterer
npm package url(optional):
License(s): Apache 2.0
Official homepage:
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Notes from cdnjs maintainer:
You are welcome to add a library via sending pull request,
it'll be faster then just opening a request issue,
and please don't forget to read the guidelines for contributing, thanks!!

[maruilian11]

@broady @skarEE @moiarcsan could you please add tags so that we can add this libs with git auto-update. thank you very much!

[maruilian11]

@PeterDaveHello there seems no response for a month.

[PeterDaveHello]

Is there any pre-built file in repository we can use?

[maruilian11]

@PeterDaveHello this lib only has one version (v1.0.0), maybe we just add this version first without waiting for the tag?
here are the files
https://github.com/googlemaps/js-marker-clusterer/tree/gh-pages/src

[PeterDaveHello]

Yes, it'll be good.