core, bridge, jp: management of service discovery extensions (XEP-0128)

src/bridge/bridge_constructor/bridge_template.ini

@@ -614,11 +614,20 @@ async=
 type=method
 category=core
 sig_in=ss
-sig_out=(asa(sss))
+sig_out=(asa(sss)a{sa(a{ss}as)})
 doc=Discover infos on an entity
 doc_param_0=entity_jid: JID to discover
 doc_param_1=%(doc_profile_key)s
-doc_return=discovery data
+doc_return=discovery data:
+ - list of features
+ - list of identities (category, type, name)
+ - dictionary of extensions (FORM_TYPE as key), with value of:
+    - list of field which are:
+        - dictionary key/value where key can be:
+            * var
+            * label
+            * type
+        - list of values
 
 [discoItems]
 async=