Add day 6 solution

06/example1

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+mjqjpqmgbljsphdztnvjfqwrcgsmlb

06/example2

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+bvwbjplbgvbhsrlpgdmjqwftvncz

06/example3

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+nppdvjthqldpwncqszvftbrmjlhg

06/example4

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+nznrnfrfntjfmvfwmzdfjlvtqnbhcprsg

06/example5

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+zcfzfwzzqfrljwzlrfnpqdbhtmscgvjw

06/tuning.py

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+
+import fileinput
+from typing import Iterable
+
+def solve(data: str) -> int:
+    for idx in range(len(data)):
+        if len(set(list(data[idx:idx+4]))) == 4:
+            return idx + 4
+
+def solveb(data: str) -> int:
+    for idx in range(len(data)):
+        if len(set(list(data[idx:idx+14]))) == 14:
+            return idx + 14
+
+if __name__ == "__main__":
+    with fileinput.input() as f:
+        data = f.readline()
+    print(solve(data))
+    print(solveb(data))