changes to wincred, completes list functionality in windows

Signed-off-by: avaid96 <avaid1996@gmail.com>

vendor/github.com/danieljoos/wincred/wincred.go

@@ -67,3 +67,8 @@ func (t *DomainPassword) Delete() (err error) {
 func (t *DomainPassword) SetPassword(pw string) {
 	t.CredentialBlob = utf16ToByte(syscall.StringToUTF16(pw))
 }
+
+// List the contents of the Credentials store
+func List() ([]*Credential, error) {
+	return nativeCredEnumerate("", true)
+}