Mock jukebox.publishing in tests to avoid zmq

Currently it is hard to install zmq (MiczFlor#2050) and for
CI pytest `zmq` is not available.
As the test do not really require `jukebox.publishing`
running, mocking it in the test avoids it being imported.

Thus the tests do not require `zmq` to be installed.

test/evdev/test_evdev_init.py

@@ -1,7 +1,9 @@
 """ Tests for the evdev __init__ module
 """
+import sys
 import unittest
 from unittest.mock import patch
+from unittest.mock import MagicMock
 
 # Before importing the module, the jukebox.plugs decorators need to be patched
 # to not try to register the plugins
@@ -16,6 +18,10 @@ def dummy_decorator(fkt):
 plugin.initialize = dummy_decorator
 plugin.atexit = dummy_decorator
 
+# Mock the jukebox.publishing module to prevent issues with zmq
+# which is currently hard to install(see issue #2050)
+# and not installed properly for CI
+sys.modules['jukebox.publishing'] = MagicMock()
 
 # Import uses the patched decorators
 from components.controls.event_devices import _input_devices_to_key_mapping  # noqa: E402