scylla-sstable: Enable support for S3-stored sstables Minimal implementation of what was mentioned in this [issue](https://github.com/scylladb/scylladb/issues/20532) This update allows Scylla to work with sstables stored on AWS S3. Users can specify the fully qualified location of the sstable using the format: `s3://bucket/prefix/sstable_name`. One should have `object_storage_config_file` referenced in the `scylla.yaml` as described in docs/operating-scylla/admin.rst ref: https://github.com/scylladb/scylladb/issues/20532 fixes: https://github.com/scylladb/scylladb/issues/20535 No backport needed since the S3 functionality was never released Closes scylladb/scylladb#22321 * github.com:scylladb/scylladb: tests: Add Tests for Scylla-SSTable S3 Functionality docs: Update Scylla Tools Documentation for S3 SSTable Support scylla-sstable: Enable Support for S3 SSTables s3: Implement S3 Fully Qualified Name Manipulation Functions object_storage: Refactor `object_storage.yaml` parsing logic