feat: simple tutorial for GET API

src/tutorial/api/native_request.py

@@ -0,0 +1,9 @@
+import requests
+
+
+def fetch_user(username: str) -> dict:
+    response = requests.get(f"https://www.codewars.com/api/v1/users/{username}")
+    return response.json()
+
+
+print(fetch_user("cw-sandro"))