Improve storybook story selection (#3653)

This PR builds on top of #3652 by adding a selection prompt to the
storybook to allow you to choose from the available list of stories if
you don't provide one explicitly:

<img width="1387" alt="Screenshot 2023-12-14 at 12 00 26 PM"
src="https://github.com/zed-industries/zed/assets/1486634/640d62a3-1340-45f1-9746-69b513faff62">

This way we don't have to keep generating the `script/storybook` script
whenever stories are added/removed.

#### Usage (through `cargo`):

```sh
# Select from the available stories
cargo run -p storybook2

# Run a specific story
cargo run -p storybook2 -- components/list_item
```

#### Usage (through `script/storybook`):

```sh
# Select from the available stories
./script/storybook

# Run a specific story
./script/storybook list_item
```

Release Notes:

- N/A

script/storybook

@@ -1,60 +1,7 @@
 #!/bin/bash
 
-options=(
-  "auto_height_editor"
-  "avatar"
-  "button"
-  "checkbox"
-  "context_menu"
-  "cursor"
-  "disclosure"
-  "focus"
-  "icon"
-  "icon_button"
-  "keybinding"
-  "label"
-  "list"
-  "list_header"
-  "list_item"
-  "overflow_scroll"
-  "scroll"
-  "tab"
-  "tab_bar"
-  "text"
-  "viewport_units"
-  "z_index"
-  "picker"
-)
-
-run_story() {
-  echo "Running story: $1"
-  cargo run -p storybook2 -- "$1"
-}
-
-if [ "$#" -gt 0 ]; then
-  story_arg="$1"
-  # Add prefix 'components/' if not present
-  if [[ $story_arg != components/* ]]; then
-    story_arg="components/$story_arg"
-  fi
-  # Check if the provided story is a valid option
-  for opt in "${options[@]}"; do
-    if [[ "components/$opt" == "$story_arg" ]]; then
-      run_story "$story_arg"
-      exit
-    fi
-  done
-  echo "Invalid story name: $1"
-  exit 1
+if [ -z "$1" ]; then
+    cargo run -p storybook2
+else
+    cargo run -p storybook2 -- "components/$1"
 fi
-
-prompt="Please select a story:"
-PS3="$prompt "
-select story in "${options[@]}"; do
-  if [[ -n $story ]]; then
-    run_story "components/$story"
-    break
-  else
-    echo "Invalid option"
-  fi
-done