refactor: Added Alert function in TabLinkNavigator and changed Protocol

The 'alert' function that was previously in TabPartialNavigator has been added to TabLinkNavigator as well, and related examples have been included.

Author: 97chos

Examples/TabNavigator/03-TabEventSubscriber/TabEventSubscriber/Pages/Common/Step1/Step1Page.swift

@@ -20,6 +20,20 @@ struct Step1Page: View {
         Text("Close Sheet")
       }
 
+      Button(action: {
+        navigator.alert(model: .init(
+          title: "Test Title",
+          message: "Message",
+          buttons: [
+            .init(
+              title: "OK",
+              style: .default)
+          ],
+          flagType: .default))
+      }) {
+        Text("Show Alert")
+      }
+
       Spacer()
     }
     .onAppear {

Sources/LinkNavigator/Core/Core/TabLinkNavigator/TabLinkNavigator.swift

@@ -161,6 +161,11 @@ extension TabLinkNavigator {
     NotificationCenter.default
       .post(name: TabbarEventNotification.onSelectedTab, object: targetPath)
   }
+
+  public func alert(model: Alert) {
+    let currentController = modalController ?? fullSheetController ?? mainController?.selectedViewController
+    currentController?.present(model.build(), animated: true)
+  }
 }
 
 extension UINavigationController {

Sources/LinkNavigator/Core/Core/TabLinkNavigator/TabPartialNavigator.swift

@@ -259,8 +259,8 @@ extension TabPartialNavigator: TabLinkNavigatorProtocol {
     currentTabNavigationController.setViewControllers(reloadedVC, animated: isAnimated)
   }
 
-  public func alert(target _: NavigationTarget, model: Alert) {
-    currentController?.present(model.build(), animated: true)
+  public func alert(model: Alert) {
+    rootNavigator?.alert(model: model)
   }
 
   public func send(targetTabPath: String?, linkItem: LinkItem) {

Sources/LinkNavigator/Core/Protocol/TabLinkNavigatorProtocol.swift

@@ -130,11 +130,8 @@ public protocol TabLinkNavigatorProtocol {
   /// the alert is displayed either on the root or the sub-controller.
   ///
   /// - Parameters:
-  ///   - target: The target specifying where to display the alert. It can be root, sub, or default.
-  ///             If the target is default, it determines whether to present the alert on sub or root based
-  ///             on the `isSubNavigatorActive` property.
   ///   - model: The model containing information for building and displaying the alert.
-  func alert(target: NavigationTarget, model: Alert)
+  func alert(model: Alert)
 
   /// Sends the specified link item to a specific subscriber ('sub') or page sheet within the current navigation stack.
   /// This method facilitates communication between pages, allowing data to be transferred to a specific 'sub' or page sheet as defined in the link item.