Migrate from S3 easily with the R2 Super Slurper

What this post added

Introduced the R2 Super Slurper, a feature to migrate data from S3-compatible object storage to Cloudflare R2. It offers two modes: a one-time 'giant slurp' for bulk imports and a future 'sip by sip' incremental migration where objects are copied to R2 upon their first request. The 'sip by sip' flow involves checking R2, fetching from origin if not found, serving from R2, and then copying to R2 for subsequent requests.