Test upgrading @docusaurus/core and docusaurus-openapi-docs to v3

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Description

Testing upgrade to latest docusaurus and v3 openapi plugin

TODO:

• [x] Refactor sidebars.js to sidebars.ts modules
• [x] Refactor all sidebar.js to sidebar.ts modules
• [x] Refactor docusaurus config as necessary
• [ ] Address all MDX syntax errors (mostly expedition and swfw docs)

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Build is currently failing with an error similar to the one reported here: https://github.com/facebook/docusaurus/issues/9907

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Visit the preview URL for this PR (updated for commit 6d34750):

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@ymckee FYI this is where I am testing the migration to v3

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@blindaa121 just upgraded to latest docusaurus and openapi plugin canary. Aside from the merge conflicts we'll also want to make sure we pull in all the changes that occurred since the last time I updated this branch.