Move BigIcon into Compound and add a new TitleAndIcon component. (#4866)

* Move BigIcon into Compound.

* Replace the old server selection image asset with the \.host icon.

* Add a new TitleAndIcon component to Compound.

* Add the ability to override TitleAndIcon's padding.

compound-ios/Inspector/Sources/Components/BigIconScreen.swift

@@ -0,0 +1,26 @@
+//
+// Copyright 2025 New Vector Ltd
+//
+// SPDX-License-Identifier: AGPL-3.0-only
+// Please see LICENSE in the repository root for full details.
+//
+
+import Compound
+import SwiftUI
+
+struct BigIconScreen: View {
+    var body: some View {
+        ScreenContent(navigationTitle: "Big Icon") {
+            BigIcon_Previews.states
+        }
+    }
+}
+
+struct BigIconScreen_Previews: PreviewProvider {
+    static var previews: some View {
+        NavigationStack {
+            BigIconScreen()
+        }
+        .previewLayout(.fixed(width: 375, height: 700))
+    }
+}