Add Channel Search documentation to SwiftUI (#3471)

Author: nuno-vieira

docusaurus/docs/iOS/swiftui/channel-list-components/channel-list-search.md

@@ -2,13 +2,34 @@
 title: Channel List Search
 ---
 
-By default, the channel list component shows a search bar at the top. This component lets you search through messages matching the search term inside the channels. When you tap on a search result, the corresponding channel is opened, automatically scrolling to the searched message.
+### Basic Usage
+
+The channel list component shows a search bar at the top that lets you search through messages or channels depending on the `searchType` provided when creating the `ChatChannelListView` component. By default, the search type is set to `.messages`, which means that the search will be performed on messages inside the channels and threads.
+
+If you want to change the search type to `.channels`, you can do so by setting the `searchType` parameter when creating the `ChatChannelListView` component:
+
+```swift
+ChatChannelListView(
+    viewFactory: CustomAppFactory.shared,
+    searchType: .channels
+)
+```
+
+:::note
+The `searchType` parameter is only available on the SwiftUI SDK since version [4.66.0](https://github.com/GetStream/stream-chat-swiftui/releases/tag/4.66.0).
+:::
+
+### Navigation
+
+When a user taps on a search result, the corresponding channel is opened, automatically scrolling to the searched message or channel depending on the `searchType`.
 
 The SwiftUI components can also scroll to a message that is not available in the local database at that moment. In those cases, the messages around that message are also loaded. The scrolling in these cases can happen in both directions - up (for loading older messages) and down (for loading newer messages).
 
 You can also search for messages that are part of message threads. In those cases, first the channel is opened, and then the corresponding message thread is shown, scrolling to the searched message.
 
-In order to replace this component with your own (or completely remove it by returning an EmptyView), you need to implement the `makeChannelListTopView` method:
+### Search Bar
+
+In order to replace the search bar with your own (or completely remove it by returning an EmptyView), you need to implement the `makeChannelListTopView` method:
 
 ```swift
 func makeChannelListTopView(
@@ -22,7 +43,7 @@ In this method, a binding of the search text is provided, in case you want to im
 
 ### Message Search Controller
 
-Under the hood, the channel list search uses the `MessageSearchController`, that you can also use to provide search in your custom UI components.
+Under the hood, the channel list search uses the `MessageSearchController` when the `searchType` is set to `.messages`, so that you can also use it to provide search in your custom UI components.
 
 Here's an example how to search for a particular search text: