Consider adding a "Downloads" page

[alamb]

In https://github.com/apache/datafusion/pull/10233 @tisonkun added a doap file 🙏

However, one of the fields is a "download" page which they mention doesn't quite map to Rust expectations / common DataFusion usage.

The situation is somehow complicated due to the existing ASF policies, which make some assumptions in the old days.

Here is the policy: https://infra.apache.org/release-download-pages.html

You can see a formal Download page has a lot of requirements to follow. But for DataFusion, most users just use cargo add datafusion and never care if such a page exists.

We recently had a discussion on the [email protected] for related topics; while I understand your suggestion here, and we should do what is helpful for our users.

However, Arrow has a release/download page, and I check it meets all the requirements. So if people in DataFusion have time to implement it, we can avoid any further concern.

Originally posted by @tisonkun in https://github.com/apache/datafusion/pull/10233#discussion_r1579932133