Add http.parseBasicAuth func stub

Author: nekohasekai

protocol/http/link.go

@@ -12,3 +12,6 @@ func ReadRequest(b *bufio.Reader) (req *http.Request, err error)
 
 //go:linkname URLSetPath net/url.(*URL).setPath
 func URLSetPath(u *url.URL, p string) error
+
+//go:linkname ParseBasicAuth net/http.parseBasicAuth
+func ParseBasicAuth(auth string) (username, password string, ok bool)