Changes from https://github.com/planetscale/nextjs-starter. Realized the current example was not only out of date, but the demo was broken. Will update the demo site post-merge here 👍
* [examples] add with-mysql example * [examples] add demo link to with-mysql readme * [examples] add next.js + mysql example with correct env pattern * [examples] fix lint errors, update package name, remove unnecessary res statement * [examples] remove unused imports and variables * [examples] fix some linting errors * Added NextApiHandler to API endpoints * Lint fixes * Added useEntry hook * Updated type * Update examples/with-mysql/package.json * Updated readme * fixed URL Co-authored-by: Matthew Sweeney <mail@mcs.dev> Co-authored-by: Luis Alvarez <luis@vercel.com>
