types: Moved code that implements conversion of types' values to string.
types: Moved code that implements conversion of types' values to string.

Signed-off-by: Daniel Fiala <3d0f3b9ddcacec30c4008c5e030e6c13a478cb4f@scylladb.com>

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