new: usr: Add +[no]showtruncated and +[no]showallmessages to dig

The dig option +showtruncated adds the ability to display
the truncated message before retrying the query over TCP.

The dig option +showallmessages add a short cut which is
the equivalent of "dig +qr +showbadcookie +showbadversion
+showtruncated".

Closes #5657

Merge branch '5657-add-showtruncated-to-dig' into 'main'

See merge request isc-projects/bind9!11275