chore: follow Lucia examples a bit more closely

[benmccann]

I was having a hard time following the example in https://github.com/lucia-auth/example-sveltekit-email-password-2fa because methods were in different order and places

There's also a couple methods missing that I think we could add at some point. I filed #122 for that

Just curious if you were following a different example than I'm looking at?

I also changed the default for creating a demo to true because otherwise the auth file was just unused and it was a bit hard to see how to integrate it. I think even if I had my own login screens already I'd still want the demo as a guide

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[AdrianGonz97]

Just curious if you were following a different example than I'm looking at?

I mainly followed this section of the documentation: https://lucia-next.pages.dev/sessions/basic-api/drizzle-orm

I may have swapped the order of some things

[benmccann]

Interesting. Looks like they're not consistent about the order between that guide and the examples, so I won't worry too much about the order then. I restored the old order to make the diff easier to follow. I did put export type SessionValidationResult at the bottom though as it was at the bottom in both the examples and guide you linked to

The one thing I did change was to move the generateUserId method out of auth and into the registration function. It's not really auth-related. I also updated it to generate IDs the same as nanoid to be a bit more realistic