feat: make rafiki admin auth optional

[JoblersTune]

Changes proposed in this pull request

• While auth is enabled by deafult, you can now run Rafiki Admin without auth.
• Included another docker-compose to include auth changes and provided a new command in package.json.

Context

Fixes #2806

Checklist

• Related issues linked using fixes #number
• Tests added/updated
• Documentation added
• Make sure that all checks pass
• Bruno collection updated

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[JoblersTune]

I assume I should remove all auth stuff from the localenv README then? No mention of Kratos, or mailslurper etc. Change the architecture diagram etc.?

I guess my hesitation here is because to lose that information here makes me feel like we need it elsewhere then and this becomes a bit of a bigger docs discussion. Perhaps it's needed in the bigger architecture diagram instead of just in localenv? This may be true regardless but it also means that we don't have visual access to the ports for accessing e.g. mailslurper anymore.

Perhaps we need to break this out into a docs issue?

[JoblersTune]

@melissahenderson and @brad-dow please just have a look at the README updates. Is it still okay to publish these while we're on a docs hold?

Also note, we'll need these changes reflected in the Local Playground, and Rafiki Admin docs when they're updated as well.

[JoblersTune]

A lot of the changes are repeated because I consolidated all the new logic from the redirect functions into a single checkAuthAndRedirect function in packages/frontend/app/lib/kratos_checks.server.ts.

[JoblersTune]

You'll see some custom logic here and in the sidebar component because the logout button and account settings menu item should only appear if auth is enabled and a user is logged in.

[melissahenderson]

@JoblersTune (and @brad-dow) I think it's OK to push the changes to the README since it's outside of /documentation, but it's probably best for @huijing to chime in. I made the doc-freeze announcement yesterday on her recommendation. The writers have an action item to discuss all the READMEs during the work week. I'll make a note to ensure we cover the local playground and Rafiki Admin as well.

[huijing]

I say go ahead and merge this. When the README discussion happens, we make sure all agree which bits we remove (if at all, because I don't really foresee major changes to the READMEs, maybe just tweaking of wording here and there)

[JoblersTune]

@melissahenderson the local playground changes would be something along these lines.

[JoblersTune]

@melissahenderson and these kinds of changes in the Rafiki Admin docs