Feature/vhs demo (#15)

* add vhs made demo gif

* add support for ANYDB_DB env var

* left one section

* fixed data type bug, added demo gifs, upgraded dependencies

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Co-authored-by: Thomas von Dein <tom@vondein.org>

demo/intro.tape

@@ -0,0 +1,76 @@
+# -*-sh-*-
+
+Output intro.gif
+Set FontSize 20
+Set Width 1000
+Set Height 800
+Set Theme { "name": "Whimsy", "black": "#535178", "red": "#ef6487", "green": "#5eca89", "yellow": "#fdd877", "blue": "#65aef7", "magenta": "#aa7ff0", "cyan": "#43c1be", "white": "#ffffff", "brightBlack": "#535178", "brightRed": "#ef6487", "brightGreen": "#5eca89", "brightYellow": "#fdd877", "brightBlue": "#65aef7", "brightMagenta": "#aa7ff0", "brightCyan": "#43c1be", "brightWhite": "#ffffff", "background": "#29283b", "foreground": "#b3b0d6", "selection": "#3d3c58", "cursor": "#b3b0d6" }
+Set WindowBar Colorful
+Set BorderRadius 10
+Set Shell zsh
+Set FontFamily "IBM Plex Mono"
+Set CursorBlink false
+Set PlaybackSpeed 1
+Set TypingSpeed .05
+
+Hide
+Type `PROMPT=''`
+Enter
+Type "setopt interactivecomments"
+Enter
+Type "autoload -U colors && colors"
+Enter
+Type `PS1="%{$fg[magenta]%}demo> %{$reset_color%}"`
+Enter
+Type "clear"
+Enter
+Show
+
+Type "# Store something"
+Enter
+Sleep 1s
+Type "anydb set kitty meow"
+Enter
+Sleep 3s
+
+Enter
+Type `# What's in the store?`
+Enter
+Sleep 1s
+Type "anydb ls"
+Enter
+Sleep 3s
+
+Enter
+Type "# Fetch something"
+Enter
+Sleep 1s
+Type "anydb get kitty"
+Enter
+Sleep 3s
+
+Enter
+Type "# Unicode also works, of course"
+Enter
+Sleep 1s
+Type "anydb set 猫咪 喵"
+Enter
+Sleep 2s
+Type "anydb get 猫咪"
+Enter
+Sleep 3s
+
+Enter
+Type "# Do creative things with anydb list"
+Enter
+Sleep 1s
+Type "anydb set penelope marmalade"
+Enter
+Type "anydb set christian tacos"
+Enter
+Type "anydb set muesli muesli"
+Enter
+Type "anydb list | xargs -n 2 printf '%s loves %s.\n'"
+Enter
+Sleep 3s
+