idl: Add row_level_diff_detect_algorithm
idl: Add row_level_diff_detect_algorithm

Needed by the row level repair RPC verbs.

avikivity/scylla,avikivity/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla,avikivity/scylla