bound_view: Build range bound from bound_view
bound_view: Build range bound from bound_view

We introduce the bound_view::to_range_bound() function, which builds a
wrapping_range or nonwrapping_range bound from a bound_view.

Signed-off-by: Duarte Nunes <a60e8b7496f7715d71354fe4c06dd24017025bf1@scylladb.com>

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