Consider explicit support for sqlite as database type

[rfay]

Is your feature request related to a problem?

There are folks that use sqlite3 as the database type right in the web container.

This is especially common in testing in the Drupal world.

We could support it directly, just by managing the settings and proposing a location for the sqlite file.

Describe your solution

Add database: sqlite and then provide default settings for it, for example, settings.ddev.php

Describe alternatives

No response

Additional context

No response