feat(CommandPalette): handle filter attribute in groups (#871)

docs/content/5.navigation/2.command-palette.md

@@ -183,6 +183,19 @@ componentProps:
 The `loading` state will automatically be enabled when a `search` function is loading. You can disable this behavior by setting the `loading-icon` prop to `null` or globally in `ui.commandPalette.default.loadingIcon`.
 ::
 
+## Filter search
+
+You can also pass a function to the `filter` property of a group to filter displayed commands after the search happened. The function will receive the query as its first argument, the array of commands as second argument and should return an array of commands.
+
+::component-example
+---
+padding: false
+component: 'command-palette-example-filter'
+componentProps:
+  class: 'h-[274px]'
+---
+::
+
 ## Slots
 
 ### `<group>-icon`