s3_test_results.md

S3 compatibility test results

Latest S3 test results are available for each release version. E.g. for v0.31.1: https://rest.fs.neo.org/7ZVSQHtioVRiDT2btN9xEmQhczXV9vryCEAHUawfD8Sc/354-1726230206/index.html