net/addr/sock: Add classes for generating sockaddrs

This adds classes to generate IP socket information that can be
consumed by `connect()` and `bind()`.

Change-Id: I84c8fc3794d1113877f0f967291317152a0669d5
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/include/meson.build b/include/meson.build
index c541513..f9eff41 100644
--- a/include/meson.build
+++ b/include/meson.build
@@ -14,6 +14,7 @@
   'stdplus/hash/tuple.hpp',
   'stdplus/net/addr/ether.hpp',
   'stdplus/net/addr/ip.hpp',
+  'stdplus/net/addr/sock.hpp',
   'stdplus/net/addr/subnet.hpp',
   'stdplus/numeric/endian.hpp',
   'stdplus/numeric/str.hpp',