Update FormData and route handlers examples

[max-programming]

This PR updates the FormData and Route Handlers examples

• nextjs-upload-formdata demo will be

  • generating the signature using API route/route handlers
  • uploading the image from the frontend

• nextjs-route-handlers-upload demo will be

  • Sending the image in FormData format to the route handler (app router) or api route (pages router)

Some breaking changes

Environment variables are as follows now (update in deployment - if deployed)

nextjs-upload-formdata

NEXT_PUBLIC_CLOUDINARY_CLOUD_NAME=""
NEXT_PUBLIC_CLOUDINARY_API_KEY=""
NEXT_PUBLIC_CLOUDINARY_UPLOADS_FOLDER=""

CLOUDINARY_API_SECRET=""

nextjs-route-handlers-upload

CLOUDINARY_CLOUD_NAME=""
CLOUDINARY_API_KEY=""
CLOUDINARY_UPLOADS_FOLDER=""
CLOUDINARY_API_SECRET=""

[vercel[bot]]

@max-programming is attempting to deploy a commit to the Cloudinary DevX Team on Vercel.

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[colbyfayock]

hey is this still a WIP per your description?

[max-programming]

@colbyfayock Yes, the README updates are remaining. Done. Review and let me know

Plus I'll try to update the rest of 2 remaining examples as well in this PR itself

[colbyfayock]

tested both and seem to work well. push merging main to get rid of conflicts

[colbyfayock]

thanks @max-programming