Xenoblade Chronicles 2 screenshots and saves (#76)

* Xenoblade 2 Save files

Added some Xenoblade 2 save files.

* Add Xenoblade 2 screenshots (canary 1939)

Added some Xenoblade 2 screenshots using the current canary version (1939).

* Add files via upload

games/xenoblade-chronicles-2/savefiles/chapter-3-save.dat

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+title = "Chapter 3"
+description = "Save from chapter three of the game. You may need to update the game to the latest version for it to work."
+author = "Blargle"
+title_id = "0100E95004038000"

games/xenoblade-chronicles-2/savefiles/complete-save.dat

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+title = "Completed Game"
+description = "Game is completed and the option of newgame plus is avaliable. You may need to update the game to the latest version for it to work."
+author = "Blargle"
+title_id = "0100E95004038000"