Added simple function and script for testing

Author: fungss

func.py

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+def sum(x: float, y: float) -> float:
+    return x + y

requirements.txt

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+annotated-types==0.5.0
+anyio==3.7.1
+fastapi==0.101.1
+idna==3.4
+numpy==1.25.2
+pandas==2.0.3
+pydantic==2.3.0
+pydantic_core==2.6.3
+python-dateutil==2.8.2
+pytz==2023.3
+six==1.16.0
+sniffio==1.3.0
+starlette==0.27.0
+typing_extensions==4.7.1
+tzdata==2023.3

test_func.py

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+import unittest, func
+
+class Test(unittest.TestCase):
+
+    def test_sum(self):
+        self.assertEqual(func.sum(2,3), 5)
+
+if __name__ == "__main__":
+    unittest.main()