refactor: Replace minio/mc with garage/rclone

[NickLarsenNZ]

• Replace minio with garage
  • I use region-1 as the S3 region to keep things vendor agnostic.
• replace mc commands with rclone
  • I chose rclone over aws-cli to make it vendor agnostic. There were other options but they were less maintained.
• Update docs
• Update storage requirements for the big demo/stack.
• todo: Only request public parts for S3 clients

Testing

I ran parts of the demos to verify S3 read/write paths (except the big demo).

• airflow-scheduled-job
• data-lakehouse-iceberg-trino-spark
• jupyterhub-keycloak
• nifi-kafka-druid-earthquake-data (hard to test since Druid writes to S3 after 1 hour)
• nifi-kafka-druid-water-level-data (hard to test since Druid writes to S3 after 1 hour)
• spark-k8s-anomaly-detection-taxi-data
• trino-iceberg
• trino-taxi-data
• monitoring (stack)

[NickLarsenNZ]

We could look at putting the Garage helm chart somewhere so we can helm install it.
https://garagehq.deuxfleurs.fr/documentation/cookbook/kubernetes/

[sbernauer]

May thanks for this PR, it surely was a big effort.
I also like all of the small cleanups. The only "real" problems are related to missing icons in images

[sbernauer]

Images now look good, thanks!

[NickLarsenNZ]

I merged too soon. @adwk67 has some suggestions