fix: check in updated file layout

.gitignore

@@ -16,7 +16,9 @@ target/
 
 # Advent of Code
 # @see https://old.reddit.com/r/adventofcode/comments/k99rod/sharing_input_data_were_we_requested_not_to/gf2ukkf/?context=3
-/data
-!/data/inputs/.keep
-!/data/examples/.keep
-!/data/puzzles/.keep
+
+data
+
+!data/inputs/.keep
+!data/examples/.keep
+!data/puzzles/.keep