Additional WS connection tracing

[bernardnormier]

This PR adds more tracing to the WS transport (C++, C#, Java).

For example:

-- 11/04/24 16:50:18554 /Users/bernard/builds/ice/cpp/test/Ice/timeout/build/macosx/shared/client: Network: trying to establish ws connection to 127.0.0.1:12010
-- 11/04/24 16:50:18554 /Users/bernard/builds/ice/cpp/test/Ice/timeout/build/macosx/shared/client: Network: sent ws connection HTTP upgrade request
   local address = 127.0.0.1:50855
   remote address = 127.0.0.1:12010
-- 11/04/24 16:50:19555 /Users/bernard/builds/ice/cpp/test/Ice/timeout/build/macosx/shared/client: Network: failed to establish ws connection
   local address = 127.0.0.1:50855
   remote address = 127.0.0.1:12010
   connection establishment timed out

The "sent ws connection HTTP upgrade request" is new.

This could help understand #3048.