Add support for roezio / importing xdg value

Signed-off-by: Maxime “pep” Buquet <pep@bouah.net>

ChangeLog

@@ -2,6 +2,7 @@ Version 0.7.0:
 xxxx-xx-xx Maxime “pep” Buquet <pep@bouah.net>
   * Changes:
     - Add own-key support to fingerprint method. Requires Poezio 237fd74.
+    - Add support for roezio (Rust re-impl.).
 
 Version 0.6.0:
 2022-04-03 Maxime “pep” Buquet <pep@bouah.net>

poezio_omemo/__init__.py

@@ -20,10 +20,15 @@ from typing import Dict, List, Optional, Tuple
 
 from poezio import colors
 from poezio.plugin_e2ee import E2EEPlugin
-from poezio.xdg import DATA_HOME
 from poezio.theming import Theme, dump_tuple
 from poezio.tabs import ChatTab, DynamicConversationTab, StaticConversationTab, MucTab
 
+try:
+    from poezio.xdg import DATA_HOME
+except ImportError:
+    from poezio.libpoezio import XDG
+    DATA_HOME = XDG.data_dir
+
 from omemo.exceptions import MissingBundleException
 from slixmpp import JID
 from slixmpp.stanza import Message