docs(ui,docs): Add documentation for Medusa UI 2.0.0 (#5227)

* add docs for medusa ui 2.0.0

* fix: copy as child example

* fix: dropdown menu example

* add accordion examples

* fix lint issues

* fix apos in progress tabs demo

* resolve comments

* add icon

* bump z-index on modals to prevent clashing with navbar

* add sidebar item and card

* undo modal z index changes

* add links to updated and new components

* update version

* rm inline code formatting on links

---------

Co-authored-by: Shahed Nasser <shahednasser@gmail.com>

www/apps/ui/src/content/docs/components/command-bar.mdx

@@ -0,0 +1,63 @@
+---
+title: "Command Bar"
+description: "Display a command bar with a list of commands"
+component: true
+---
+
+<ComponentExample name="command-bar-demo" />
+
+## Usage
+
+---
+
+```tsx
+import { CommandBar } from "@medusajs/ui"
+```
+
+```tsx
+<CommandBar open={open}>
+  <CommandBar.Bar>
+    <CommandBar.Value>{count} selected</CommandBar.Value>
+    <CommandBar.Seperator />
+    <CommandBar.Command
+      action={onDelete}
+      label="Delete"
+      shortcut="d"
+    />
+    <CommandBar.Seperator />
+    <CommandBar.Command
+      action={onEdit}
+      label="Edit"
+      shortcut="e"
+    />
+  </CommandBar.Bar>
+</CommandBar>
+```
+
+## API Reference
+
+---
+
+### CommandBar
+
+The root component of the command bar. This component manages the state of the command bar.
+
+<ComponentProps component="command-bar" />
+
+### CommandBar.Bar
+
+The bar component of the command bar. This component is used to display the commands.
+
+### CommandBar.Value
+
+The value component of the command bar. This component is used to display a value, such as the number of selected items which the commands will act on.
+
+### CommandBar.Seperator
+
+The seperator component of the command bar. This component is used to display a seperator between commands.
+
+### CommandBar.Command
+
+The command component of the command bar. This component is used to display a command, as well as registering the keyboad shortcut.
+
+<ComponentProps component="command-bar-command" />