stub out more types/funcs to compile against golang.org/x/net/internal/socket (#17)

* stub out more types/funcs to compile against golang.org/x/net/internal/socket

These are changes need to compile github.com/domainr/dnsr/ with TinyGo. See issue tinygo-org/net#14.

These change are mostly to fix missing symbols in src/net. Missing types and functions are cut-and-pasted from go1.21.4. Functions are stubbed out returning errors.New("not implemented").

DNRS is compiled by running tinygo test:

   sfeldma@nuc:~/work/dnsr$ tinygo test -target=wasi

With this patch, and a corresponding patch for tinygo/ to fixup crypto/tls, you should get a clean compile.

README.md

@@ -49,9 +49,11 @@ src/net
 │   ├── status.go
 │   ├── transfer.go		*
 │   └── transport.go		*
+├── interface.go		*
 ├── ip.go
 ├── iprawsock.go		*
 ├── ipsock.go			*
+├── lookup.go			*
 ├── mac.go
 ├── mac_test.go
 ├── netdev.go			+
@@ -61,10 +63,12 @@ src/net
 ├── README.md
 ├── tcpsock.go			*
 ├── tlssock.go			+
-└── udpsock.go			*
+├── udpsock.go			*
+└── unixsock.go			*
 
 src/crypto/tls/
 ├── common.go			*
+├── ticket.go			*
 └── tls.go			*
 ```