Add dummy test for bundle CI

Add dummy test

aidge_learning/unit_tests/test_tensor.py

+"""
+Copyright (c) 2023 CEA-List
+
+This program and the accompanying materials are made available under the
+terms of the Eclipse Public License 2.0 which is available at
+http://www.eclipse.org/legal/epl-2.0.
+
+SPDX-License-Identifier: EPL-2.0
+"""
+
+import unittest
+import aidge_learning
+
+
+class test_dummy(unittest.TestCase):
+    """Test tensor binding
+    """
+    def setUp(self):
+        pass
+    def tearDown(self):
+        pass
+
+    def test_dummy(self):
+        self.assertEqual(1, 1)
+
+if __name__ == '__main__':
+    unittest.main()