Adds fixture for tf2 layer tests to run them with new FE (#13403)

* Adds fixture for TF new FE

* fixes imports

tests/layer_tests/tensorflow2_keras_tests/conftest.py

@@ -1,10 +1,36 @@
 import inspect
+import logging as log
+import os
+from pathlib import Path
 
+import pytest
 from common.layer_test_class import get_params
 from common.logger import *
+from common.utils.common_utils import copy_files_by_pattern
 
 
 def pytest_generate_tests(metafunc):
     test_gen_attrs_names = list(inspect.signature(get_params).parameters)
     params = get_params()
     metafunc.parametrize(test_gen_attrs_names, params, scope="function")
+
+
+@pytest.fixture(scope='session', autouse=True)
+def rename_tf_fe_libs(request):
+    if os.getenv('OV_FRONTEND_PATH'):
+        # use this env variable to define path to your specific libs
+        openvino_lib_path = Path(os.getenv('OV_FRONTEND_PATH'))
+    else:
+        try:
+            import openvino.runtime as rt
+            # path below is built considering the use of wheels
+            openvino_lib_path = Path(rt.__file__).parent.parent / 'libs'
+        except ImportError as err:
+            raise Exception("Please set PYTHONPATH to OpenVINO Python or install wheel package "
+                            "or use OV_FRONTEND_PATH env variable") from err
+
+    tf_fe_lib_names = ['libopenvino_tensorflow_fe', 'libopenvino_tensorflow_frontend']
+
+    if request.config.getoption('use_new_frontend'):
+        log.info('Using new frontend...')
+        copy_files_by_pattern(openvino_lib_path, tf_fe_lib_names[0], tf_fe_lib_names[1])