Enabled local development env with DDEV

Thanks a lot for suggesting this improvement!
I must admit I’m not too familiar with DDEV so am a bit overwhelmed by this MR.
Could you please tell me some examples of other modules that have already done this? Do you have links to some issues that discuss this change?
Adding a whole new folder with 19 files seems like a pretty big change. What exactly is the advantage of doing this, seems like most of this is auto-generated? (In fact, could you please tell me which parts are not auto-generated? Is it just the first few lines of .ddev/config.yaml? If so, wouldn’t DDEV be able to generate the rest anyways, without us including it in the repository?)
Also, what exactly is the use case for which this is needed? Is this for including Search API in any website project, or just for testing Search API on its own in a test environment?
Finally, why did you choose MariaDB and specifcally version 10.11? Isn’t hard-coding that in our module repo a problem?

A Slack conversation started here: https://drupal.slack.com/archives/C3E9QDZ5M/p1745499507960159
Where I have also shared this link that lists all contribs hosted on Drupal Git with DDEV enabled: https://git.drupalcode.org/search?group_id=2&scope=blobs&search=filename...

Yes, most of this is auto-genarated code at the moment of DDEV and necessary DDEV addons (if any is necessary) configured for the project. The benefit of committing these files that they drastically speed up contribution to projects, because whoever has DDEV installed - the official Drupal development tool for Drupal and contribs as far as I know - could just git clone the project and run ddev start and start contributing. They do not need to follow manual steps and ensure the right set of dependencies are installed, because the committed "last known good" configuration is in the version controlling system already.

Ignoring these configs from artifacts of course is a must, because when you install a module from an artifact you most likely do not need the bundled DDEV config.