arthur: added a test api and venv/requirements.txt

Author: arthurnnguyen

a3_test_api/arthur_test_main.py

@@ -0,0 +1,14 @@
+# Arthur Nguyen
+# Assignment 3, Exercise 3
+# test_main.py
+from fastapi import FastAPI
+
+app = FastAPI()
+
+@app.get("/")
+def read_root():
+    return {"message": "Hello from your test API!"}
+
+@app.get("/ping")
+def ping():
+    return {"status": "ok"}