Data regions docs

[summerscope]

‼️ Do not merge ‼️
Until EU region is launched and relevant PRs on platform are merged
https://github.com/pydantic/platform/pull/8528

[hyperlint-ai]

PR Change Summary

Introduced a new 'Data Regions' page detailing the geographic hosting options and considerations for users.

• Added a new section on available data regions and their URLs
• Outlined region separation and data residency compliance
• Provided guidance on choosing a region based on performance and regulatory needs
• Mentioned the current lack of region migration functionality

Added Files

• docs/reference/data-regions.md

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View logs

[ChristopherGS]

@Viicos is this the correct syntax?

[Viicos]

I set the --region argument on the logfire command (similarly to --logfire-url), as these two arguments are used by all the other subcommands. So the actual syntax will be:

logfire --region eu auth