fix(net): drop special localhost handling

It is unnecessary to special-case the "localhost" domain name, as
documents like RFC 6761 (section 6.3)[1] already define its semantics.
It should hence be simply passed to getaddrinfo(), so that the proper
loopback address is returned.

On the other hand, using "*" as a shorthand for "0.0.0.0" is not
universally accepted, so Pistache should continue handle it specifically
for backwards compatibility.

This restores getaddrinfo() coverage regressed by commit
50e39e1.

[1]: https://www.rfc-editor.org/rfc/rfc6761.html#section-6.3

src/common/net.cc

@@ -438,10 +438,6 @@ namespace Pistache
             {
                 host = "0.0.0.0";
             }
-            else if (host == "localhost")
-            {
-                host = "127.0.0.1";
-            }
 
             const auto& addresses = HostToIPv4(host, portPart);
             if (!addresses.empty())

version.txt

@@ -1 +1 @@
-0.1.1.20230324
+0.1.1.20230627