Add three awesome tutorials (#3897)

...b/libraries/decks/animate-char/animate-char-add-sound.gif

...ibraries/decks/animate-char/animate-char-change-color.gif

src/lib/libraries/decks/animate-char/animate-char-jump.gif

src/lib/libraries/decks/animate-char/animate-char-move.gif

...s/decks/animate-char/animate-char-pick-another-sprite.gif

...braries/decks/animate-char/animate-char-pick-backdrop.gif

...libraries/decks/animate-char/animate-char-pick-sprite.gif

...braries/decks/animate-char/animate-char-say-something.gif

src/lib/libraries/decks/animate-char/animate-char-talk.gif

.../libraries/decks/animate-char/lib_Animate_a_Character.jpg

src/lib/libraries/decks/index.jsx

src/lib/libraries/decks/story/lib-tell-a-story.jpg

src/lib/libraries/decks/story/story-add-background-2.gif

src/lib/libraries/decks/story/story-conversation.gif

src/lib/libraries/decks/story/story-flip.gif

src/lib/libraries/decks/story/story-hide-character.gif

src/lib/libraries/decks/story/story-pick-another-sprite.gif

src/lib/libraries/decks/story/story-pick-backdrop.gif

src/lib/libraries/decks/story/story-pick-sprite.gif

src/lib/libraries/decks/story/story-say-something.gif