Docs Revamp (0.9)

[pileks]

• Sidebar refactor
• Add Quick Start for wrapper integration
• Add Concepts section with quick, dry concept explanations
• Move old "Quick Start" into "Tutorials"
• Move navigation buttons before feedback/edit page
• Remove minihacks link
• Remove codegen from react snippets project, as it wasn't used and caused build issues

Closes https://github.com/polywrap/documentation/issues/296 Closes https://github.com/polywrap/documentation/issues/295 Closes https://github.com/polywrap/documentation/issues/292 Closes https://github.com/polywrap/documentation/issues/285 Closes https://github.com/polywrap/documentation/issues/286 Closes https://github.com/polywrap/documentation/issues/288 Closes https://github.com/polywrap/documentation/issues/287 Closes https://github.com/polywrap/documentation/issues/293 Closes https://github.com/polywrap/documentation/issues/289 Closes https://github.com/polywrap/documentation/issues/294 Closes https://github.com/polywrap/documentation/issues/231