build(vhs): add initial tape

Signed-off-by: Christina Sørensen <christina@cafkafk.com>

tests/tapes/main.tape

@@ -0,0 +1,10 @@
+Output outfile
+
+Set Shell fish
+Sleep 2s
+Type "cargo run -q -- -l"
+Enter
+Sleep 3s
+Sleep 3s
+Ctrl+D
+