fix : dummy export instead of test_export to avoid confusion between test.py & generated export

.gitignore

@@ -19,7 +19,7 @@ _version.py
 *xmlrunner-results.xml
 
 # python test artifact
-aidge_core/test_export/*
+aidge_core/dummy_export/*
 
 # Mermaid
 *.mmd

aidge_core/unit_tests/test_export.py

@@ -48,7 +48,7 @@ class test_export(unittest.TestCase):
     """Test aidge export"""
 
     def setUp(self):
-        self.EXPORT_PATH = pathlib.Path("test_export")
+        self.EXPORT_PATH = pathlib.Path("dummy_export")
 
     def tearDown(self):
         pass