carddav: add very basic Client

carddav/elements.go

@@ -0,0 +1,10 @@
+package carddav
+
+import (
+	"encoding/xml"
+)
+
+type addressbookHomeSet struct {
+	Name xml.Name `xml:"urn:ietf:params:xml:ns:carddav addressbook-home-set"`
+	Href string   `xml:"href"`
+}