It's now possible to run with S3 persistent storage
if bindings are built with `s3_storage` feature.
Regular S3 credentials need to be set up locally,
and all customary env variables like AWS_SECRET_ACCESS_KEY
and AWS_ACCESS_KEY_ID work just fine.
For local development, one can set MVCCRS_ENDPOINT env variable.
For testing with MinIO, the following setup customarily works:
MVCCRS_ENDPOINT=http://localhost:9000 \
AWS_SECRET_ACCESS_KEY=minioadmin \
AWS_ACCESS_KEY_ID=minioadmin \
./libsql /tmp/testme.db