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/day3.py

@@ -1,7 +1,7 @@
-import sys
 from collections import defaultdict
+from typing import Any, Iterator
 
-line = sys.stdin.read().strip()
+from ..base import BaseSolver
 
 
 def process(directions: str) -> dict[tuple[int, int], int]:
@@ -27,8 +27,7 @@ def process(directions: str) -> dict[tuple[int, int], int]:
     return counts
 
 
-answer_1 = len(process(line))
-print(f"answer 1 is {answer_1}")
-
-answer_2 = len(process(line[::2]) | process(line[1::2]))
-print(f"answer 2 is {answer_2}")
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
+        yield len(process(input))
+        yield len(process(input[::2]) | process(input[1::2]))