shift pytest support code into deltachat package so deltabot can make use of the test infrastructure

python/tests/test_increation.py

@@ -6,10 +6,18 @@ import shutil
 import pytest
 from filecmp import cmp
 
-from conftest import wait_configuration_progress, wait_msgs_changed
+from conftest import wait_configuration_progress
 from deltachat import const
 
 
+def wait_msgs_changed(account, chat_id, msg_id=None):
+    ev = account._evtracker.get_matching("DC_EVENT_MSGS_CHANGED")
+    assert ev.data1 == chat_id
+    if msg_id is not None:
+        assert ev.data2 == msg_id
+    return ev.data2
+
+
 class TestOnlineInCreation:
     def test_increation_not_blobdir(self, tmpdir, acfactory, lp):
         ac1 = acfactory.get_online_configuring_account()