Add missing session destruction handler and add a verify endpoint.
Add missing session destruction handler and add a verify endpoint.

Signed-off-by: davemackintosh <b1c1d8736f20db3fb6c1c66bb1455ed43909f0d8@davemackintosh.co.uk>

newworldcode/multicolour-auth-oauth,Multicolour/multicolour-auth-hapi-oauth