Add documentation for the quarantine/ subdirectory that holds SSTables
isolated due to validation failures or corruption. Document the scrub
operation's quarantine_mode parameter options and the drop_quarantined_sstables
API operation.
Also update the directory hierarchy example to include the quarantine directory.
Fixes#10742
Signed-off-by: Shreyas Ganesh <vansi.ganeshs@gmail.com>
Closesscylladb/scylladb#27023
Introduce `ms` -- a new sstable format version which
is a hybrid of Cassandra's `me` and `da`.
It is based on `me`, but with the index components
(Summary.db and Index.db) replaced with the index
components of `da` (Partitions.db and Rows.db).
As of this patch, the version is never chosen
anywhere for writing sstables yet. It is only introduced.
We will add it to unit tests in a later commit,
and expose it to users in yet later commit.
