[ENH] Add NGINX timeout config file

[surchs]

• Closes Add example nginx .conf file with extended timeouts to recipe with reverse proxy containers #97

Changes proposed in this pull request:

• adds a custom timeout config for nginx
• we can use this file in our reverse proxy recipe, otherwise it has no effect

Checklist

This section is for the PR reviewer

• PR has an interpretable title with a prefix ([ENH], [FIX], [REF], [TST], [CI], [MNT], [INF], [MODEL], [DOC]) (see our Contributing Guidelines for more info)
• PR has a label for the release changelog or skip-release (to be applied by maintainers only)
• PR links to GitHub issue with mention Closes #XXXX
• Tests pass
• Checks pass

For new features:

• Tests have been added

For bug fixes:

• There is at least one test that would fail under the original bug conditions.

[surchs]

merge neurobagel/documentation#254 after this PR is merged!

[neurobagel-bot]

🚀 PR was released in v0.4.1 🚀