repair: Add suportted_diff_detect_algorithms
repair: Add suportted_diff_detect_algorithms

It returns a vector of row level repair difference detection algorithms
supported by this node.

We are going to implement the "send_full_set" in the following patches.

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