Coordinated Packages also submit to PyOpenSci review as per APE 22

I have always viewed Coordinated Package as "affiliated but managed by Astropy Project." Therefore, I think it is natural that we hold Coordinated Package to the same standards we impose to Affiliated Package. As such, we should apply [APE 22](https://github.com/astropy/astropy-APEs/blob/main/APE22.rst) to them and start a process of submitted them to pyOpenSci for formal review.

As of 2024-08-09, these are Coordinated Packages:

* asdf-astropy
* astropy (core package)
* astropy-healpix
* astroquery
* ccdproc
* photutils
* regions
* reproject
* specreduce
* specutils

But before we kick this off, we should clear the backlog in https://github.com/astropy/astropy.github.com/issues/571 and https://github.com/pyOpenSci/software-submission/issues?q=is%3Aissue+is%3Aopen+label%3Aastropy first.

cc @dhomeier @hamogu

Read APE 22 first, then review the backlog in astropy/astropy.github.com#571 and the open astropy-labeled pyOpenSci software-submission issues. Confirm the listed Coordinated Packages and determine the submission sequence; the work is done when the backlog is cleared and the packages have been submitted to pyOpenSci under the agreed process.

Written by the indexing model from the issue text.