Improve SQLite default settings

[anze3db]

Hey! I really like your idea of simplifying the creation of new projects and I was wandering if you'd also like to add a better out of the box experience for SQLite.

The changes in the PR should make SQLite scale better in high concurrency environments (some benchmarks) and remove the most common SQLite gotchas.

I also want to propose the same change to Django's startproject template, but I figured it would be a good idea to try this out on your project first. Let me know what you think!

[epicserve]

I'm open to the idea, but I would need this added to the 4.1 template as well and then the code that auto updates the templates would need to be updated to add that change, or maybe a better approach would be to modify the code that creates the new project to make those changes to the new project files.

[anze3db]

The init_command and transaction_mode options were only added in Django 5.1, so to get the same functionality in older Django versions we'd need to create our own DatabaseWrapper class. I'm happy to generate it as well if you think it's worth the extra hassle. Do you think there are people using dj-beat-drop to create new projects on older versions?

In any case, I'll move the change from the template to a python function called by create_new_project.

[epicserve]

Yeah, I don't think we need bother with adding it for older versions of Django. So you could add some logic to add if the version is greater than 5.1.

[anze3db]

{% 5.1 %} feels like a hack, so please let me know if you have a better idea for running asserts based on the Django version.

[anze3db]

@epicserve I've added the logic for both the env and non-env versions. Let me know if this works for you!

[epicserve]

@anze3db,

I made a couple commits and merged. I switched to using a tuple instead of prefixing with the "{% 5.1 %}" string. It seemed a little better that way to me.

I also switched to using a constant for the options, so you only have to change it in one place.

Also when the options are in a URL, I made sure the options where URL encoded.