[Epic] Blog Posts

I am filing a. ticket to track the idea of writing Parquet specific blog posts on features and other general interest topics to the broader Parquet community.

In my somewhat biased opinion, the main parquet website https://parquet.apache.org/docs now has good technical reference documentation that will stay up to date with the format (thanks to @emkornfield 's work to synch it with parquet format in https://github.com/apache/parquet-site/issues/140)

However, I think it would be useful to also have content, published on https://parquet.apache.org/blog/
1. aimed at a broader audience to explain Parquet concepts at a slightly higher
2. The intended audience is for those using (or contemplating using) Parquet rather than implementing parquet

@julienledem also suggested this on the mailing list: https://lists.apache.org/thread/m6p5shlt1hfk1b3h5y1pbqg8tpkwpcgz

> I was thinking that we should talk more about the new features in Parquet.
> Specifically, write blog posts about Variant or Geo types.
> How they came to be, what they enable, how they are integrated in the
> ecosystem.
> The Parquet blog is only the release announcements for now (
> https://parquet.apache.org/blog/) and we can make it an opportunity to
> spotlight some of the recent additions to the project.

Some sources of inspiration:
- https://arrow.apache.org/blog/
- https://openlineage.io/blog
- https://datafusion.apache.org/blog/

Potential topics
- [x] https://github.com/apache/parquet-site/issues/147
- [x] https://github.com/apache/parquet-site/issues/148
- [ ] https://github.com/apache/parquet-site/issues/149
- [ ] #175

Start by reviewing the existing posts at https://parquet.apache.org/blog/ and the completed topic issues #147 and #148. Then read the proposed topics in #149 and #175 and the linked inspiration blogs to define a specific audience and topic. Done means a scoped Parquet blog post is written for users or prospective users and published on the site.

Written by the indexing model from the issue text.