mar/sole: add %tab conversion

Our mark definitions for sole actions and effects pre-date our tab
completion work. This commit adds tab completion actions and
effects to the definition, so they can be sent and received as JSON.

pkg/arvo/mar/sole/action.hoon

@@ -15,7 +15,7 @@
     |=  jon/^json  ^-  sole-action
     %-  need  %.  jon
     =>  [dejs-soft:format ..sole-action]
-    |^  (fo %ret (of det+change ~))
+    |^  (fo %ret (of det+change tab+ni ~))
     ++  fo
       |*  {a/term b/fist}
       |=(c/json ?.(=([%s a] c) (b c) (some [a ~])))

pkg/arvo/mar/sole/effect.hoon

@@ -63,6 +63,10 @@
         $pro
       %+  frond  %pro
       (pairs vis+b+vis.sef tag+s+tag.sef cad+(tape (purge cad.sef)) ~)
+    ::
+        $tab
+      %+  frond  %tab
+      a+(turn p.sef |=([=cord tan=^tank] (pairs match+s+cord info+(tape ~(ram re tan)) ~)))
     ::
         ?($bel $clr $nex)
       (frond %act %s -.sef)