Add test files and testing code for Matcher class

tests/__init__.py

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+from itext2kg.utils import Matcher

tests/testing_matcher.py

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+import pytest
+import pickle
+from itext2kg.utils import Matcher
+import os
+
+# Import current_entities.pkl
+current_dir = os.path.dirname(os.path.abspath(__file__))
+current_ent_path = os.path.join(current_dir, 'current_entities.pkl')
+global_ent_path = os.path.join(current_dir, 'global_entities.pkl')
+
+with open(current_ent_path, 'rb') as file:
+    CURRENT_ENTITIES = pickle.load(file)
+
+# Import global_entities.pkl
+with open(global_ent_path, 'rb') as file:
+    GLOBAL_ENTITIES = pickle.load(file)
+
+
+GLOBAL_ENTITIES_FINAL_NAMES = ['John Doe',
+ 'Software Engineer',
+ 'XYZ Technologies',
+ 'San Francisco, CA',
+ 'Python',
+ 'Java',
+ 'B.Sc. in Computer Science',
+ 'Stanford University',
+ 'AWS',
+ 'Docker',
+ 'Kubernetes',
+ 'Problem Solving',
+ 'Team Collaboration',
+ 'Agile Practices',
+ 'Machine Learning',
+ 'Google Professional Data Engineer']
+
+matcher = Matcher()
+
+class Testor:            
+    @pytest.mark.parametrize(
+        "current_entities, global_entities",
+        [(CURRENT_ENTITIES, GLOBAL_ENTITIES)],
+        ids=["testing merging concepts"],
+    )
+    def test_merging_concepts(self, current_entities, global_entities):
+        matched_entities, global_entities_final = matcher.process_lists(current_entities, global_entities, for_entity_or_relation='entity', threshold=0.5)
+        assert(len(matched_entities) == len(current_entities))
+        assert(len(global_entities_final) == len(GLOBAL_ENTITIES_FINAL_NAMES))
+        assert([entity['name'] for entity in global_entities_final] == GLOBAL_ENTITIES_FINAL_NAMES)