docs: add demo tape

.github/demo.tape

@@ -0,0 +1,59 @@
+Output demo.mp4
+
+Require nvim
+
+Set Shell "zsh"
+Set Theme { "name": "Gruvbox Dark", "black": "#1e1e1e", "red": "#be0f17", "green": "#868715", "yellow": "#cc881a", "blue": "#377375", "magenta": "#a04b73", "cyan": "#578e57", "white": "#978771", "brightBlack": "#7f7061", "brightRed": "#f73028", "brightGreen": "#aab01e", "brightYellow": "#f7b125", "brightBlue": "#719586", "brightMagenta": "#c77089", "brightCyan": "#7db669", "brightWhite": "#e6d4a3", "background": "#282828", "foreground": "#e6d4a3" }
+
+Set Margin 80
+Set MarginFill "#663399"
+Set Padding 20
+Set BorderRadius 14
+
+Set FontFamily "JetBrainsMono Nerd Font"
+Set FontSize 14
+Set TypingSpeed 40ms
+
+Set Width 1200
+Set Height 800
+
+Hide
+Type "nvim" Enter
+Type "e"
+Show
+
+Sleep 2s
+Type "i"
+Type "We are in the directory of the bufignore.nvim plugin." Enter
+Type "Let's confirm that it's properly tracked by Git:" Sleep 1s Escape
+Type@80ms ":read! git rev-parse --show-toplevel" Sleep 1s Enter
+Sleep 2s
+
+Type "o" Enter
+Type "Great! Now, let's identify directories and files ignored by Git:" Sleep 1s Escape
+Type@80ms ":read .gitignore" Sleep 1s Enter
+Sleep 2s
+
+Type "o" Enter
+Type "Gotcha, we will open an ignored file now." Sleep 1s Escape
+Type@80ms ":vsplit ./node_modules/prettier/package.json" Sleep 1s Enter
+Sleep 4s
+Ctrl+h
+
+Type "o" Enter
+Type "At the moment, we have two buffers open: one unsaved and one git ignored." Sleep 1s Escape
+Type@80ms ":buffers" Sleep 1s Enter
+Sleep 5s Enter
+
+Type "o" Enter
+Type "Next, we will open a third buffer in the right window; this should unlist the git ignored buffer as it will become hidden." Sleep 1s Escape
+Ctrl+l
+Type@80ms ":edit ./LICENSE" Sleep 1s Enter
+Sleep 3s
+Ctrl+h
+Type@80ms ":buffers" Sleep 1s Enter
+Sleep 5s Enter
+
+Type "o" Enter
+Type "All neat and organized! 🧹" Enter Escape
+Sleep 3s