* docs: Adds Dart sample code into using custom schemas guide
* Add Flutter code to OAuth docs
* docs: Add sign out Flutter code to the OAuth guides
* Add Flutter code samples to the auth guides
* docs: Add Flutter code samples to storage docs
* docs: align all Flutter sample code to say Flutter instead of Dart
* docs: sort clean up Flutter and Dart labels
* docs: minor sample code fix
* run prettier
Begin the process of moving our MDX files into their own content directory.
Fixed a few minor bugs re: ToC and tabs not rerendering consistently on page navigation. (The ToC thing wasn't a problem before the refactor, the tabs thing is a problem on prod.)
Moved MDX files can't import their own components, so everything they require needs to be back in the component prop for mdx-remote's serializer. Cleaned this up a bit and lazy-loaded heavy/rare stuff. Also, the component prop doesn't take arbitrary objects (only actual components), so imported data has to be wrapped in a component.
Tyler