Refactor code for API (#3)

Co-authored-by: Mikael CAPELLE <mikael.capelle@thalesaleniaspace.com>
Co-authored-by: Mikaël Capelle <capelle.mikael@gmail.com>
Reviewed-on: #3

src/holt59/aoc/2015/day5.py

@@ -1,4 +1,6 @@
-import sys
+from typing import Any, Iterator
+
+from ..base import BaseSolver
 
 VOWELS = "aeiou"
 FORBIDDEN = {"ab", "cd", "pq", "xy"}
@@ -27,10 +29,8 @@ def is_nice_2(s: str) -> bool:
     return True
 
 
-lines = sys.stdin.read().splitlines()
-
-answer_1 = sum(map(is_nice_1, lines))
-print(f"answer 1 is {answer_1}")
-
-answer_2 = sum(map(is_nice_2, lines))
-print(f"answer 2 is {answer_2}")
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
+        lines = input.splitlines()
+        yield sum(map(is_nice_1, lines))
+        yield sum(map(is_nice_2, lines))