misc: wrap some calls in ensure_future to prepare for slix API change

Some things need to be rewritten in a cleaner way, and other need to be
directly deleted, but that will need to wait for the slix api change
merge.

poezio/core/core.py

@@ -621,7 +621,9 @@ class Core:
             else:
                 self.do_command(''.join(char_list), True)
         if self.status.show not in ('xa', 'away'):
-            self.xmpp.plugin['xep_0319'].idle()
+            asyncio.ensure_future(
+                self.xmpp.plugin['xep_0319'].idle()
+            )
         self.doupdate()
 
     def save_config(self):

poezio/fixes.py

@@ -5,6 +5,7 @@ upstream.
 TODO: Check that they are fixed and remove those hacks
 """
 
+import asyncio
 from typing import Callable, Any
 from slixmpp import Message, Iq, ClientXMPP
 from slixmpp.xmlstream import ET
@@ -23,7 +24,9 @@ def has_identity(xmpp, jid, identity, on_true=None, on_false=None):
         if not res and on_false is not None:
             on_false()
 
-    xmpp.plugin['xep_0030'].get_info(jid=jid, callback=_cb)
+    asyncio.ensure_future(
+        xmpp.plugin['xep_0030'].get_info(jid=jid, callback=_cb)
+    )
 
 
 def _filter_add_receipt_request(self, stanza):

poezio/multiuserchat.py

@@ -12,6 +12,7 @@ slix plugin
 
 from __future__ import annotations
 
+import asyncio
 from xml.etree import ElementTree as ET
 from typing import (
     Optional,
@@ -118,7 +119,9 @@ def join_groupchat(
         xmpp.plugin['xep_0045'].rooms[jid] = {}
         xmpp.plugin['xep_0045'].our_nicks[jid] = to.resource
 
-    xmpp.plugin['xep_0030'].get_info(jid=jid, callback=on_disco)
+    asyncio.ensure_future(
+        xmpp.plugin['xep_0030'].get_info(jid=jid, callback=on_disco)
+    )
 
 
 def leave_groupchat(