feat: rewrite programming-challenges CLI (#3)

challenges/fibonacci/solutions/python/function/README.md

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+# fibonacci/python/function
+
+Created by [@Divlo](https://github.com/Divlo) on 6 June 2021.

challenges/fibonacci/solutions/python/function/solution.py

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+from typing import List
+import sys
+
+input_values: List[str] = []
+for value in sys.stdin:
+    input_values.append(value.rstrip('\n'))
+
+
+def fibonacci(number: int) -> int:
+    return number if number < 2 else fibonacci(number-1) + fibonacci(number-2)
+
+
+print(fibonacci(int(input_values[0])))