Make a separate key features page

We currently have a key features section on the homepage that highlights some of the nice Delta Lake features:

Perhaps we should create a delta.io/key-features pages with an exhaustive list of all the key features. It'd be nice if each key feature section linked to a blog post explaining the key feature in detail. The time travel key feature section could link to [this blog post](https://delta.io/blog/2023-02-01-delta-lake-time-travel/) for example.

It'd be nice to have a page that clearly outlines all the reasons why the viewer should be seriously considering using Delta Lake.