stub security driver: check that authorization exists

sec/com/twitter.hoon

@@ -0,0 +1,23 @@
+::  Test url +https://slack.com/api/auth.test
+::
+::::  /hoon/slack/com/sec
+  ::
+/+    oauth1
+::
+::::
+  ::
+::=+  ^=  aut
+::    %+  oauth2
+::      'https://slack.com/oauth/authorize'
+::    'https://slack.com/api/oauth.access'
+|_  {(bale @t:keys:oauth1) tok/{@t @t}}
+::++  aut  ~(. ^aut +<- /client/admin)
+::++  out  (out-quay:aut 'token'^tok)
+:: ++  in   in-code:aut
+:: ++  bak  (bak-save-access:aut . |=(tok/token:aut +>(tok tok)))
+++  out
+  |=  a/hiss  ^-  {$send hiss}
+  ~|  %authorization
+  ~&  twit-auth+(~(got by q.q.a) %authorization)
+  [%send a]
+--