Create Logos webpage

[pritidesai]

We would like to have a page with variety of logos, similar to beam:

https://beam.apache.org/community/logos/

[pritidesai]

Additional comments from Matt:

We should author the official policy on the Wiki (and allow comments from "dev" list), but can draft and prepare a page for it on the website as well. In addition, we should show all the approved logos and describe request process (i.e., provide a template in lieu of a FORM) that can be sent to our "private" PPMC email list to request various usages for conferences/tradeshows.

Like what NodeJS did: https://nodejs.org/en/about/trademark/

could look to draft some rough variant of the text along with request template/process.