Added snippet for the searchable modifier

Searchable.swift

@@ -0,0 +1,31 @@
+import SwiftUI
+
+// During WWDC21, Apple introduced a new modifier .searchable that helps you to show a search bar on your app. 
+// Here’s how you can add the searchable modifier in your app.
+
+struct ContentView: View {
+
+    let developers = ["Rod", "Mac", "Stewart", "Lisa", "Andrea", "Steve", "Julia", "Chris", "Penelope"]
+
+    var filteredDevelopers: [String] {
+        if searchText.isEmpty {
+            return developers
+        } else {
+            return developers.filter { $0.contains(searchText) }
+        }
+    }
+
+    @State private var searchText = ""
+
+    var body: some View {
+        NavigationView {
+            List {
+                ForEach(filteredDevelopers, id: \.self) { name in
+                    Text(name)
+                }
+            }
+            .searchable(text: $searchText)
+            .navigationTitle("My App")
+        }
+    }
+}