Add Elm Analyzer comments for concept exercise tisbury-treasure-hunt

analyzer-comments/elm/tisbury-treasure-hunt/use_placeLocationToTreasureLocation.md

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+# use placeLocationToTreasureLocation
+
+Please use `placeLocationToTreasureLocation` in `treasureLocationMatchesPlaceLocation`, as reusing functions helps with maintainability.

analyzer-comments/elm/tisbury-treasure-hunt/use_tuple_in_case.md

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+# use tuple in case
+
+Like the instructions mention, when defining `specialCaseSwapPossible` you should use a `case` statement on a tuple with the three values of interest and pattern match on the combinations that allow swapping.

analyzer-comments/elm/tisbury-treasure-hunt/use_tuple_second.md

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+# use tuple second
+
+You will find that `Tuple.second` is very well suited for defining `countPlaceTreasures`, you can map it on the list of treasures or use it in a `List.filter` function.
+Try it out!