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/SidebarList.swift

@@ -45,6 +45,12 @@ struct SidebarList: View {
             NavigationLink(value: Screen.list) {
                 Label("List", systemImage: "list.bullet.clipboard")
             }
+            NavigationLink(value: Screen.bigIcon) {
+                Label("Big Icon", systemImage: "square.dashed")
+            }
+            NavigationLink(value: Screen.bigIcon) {
+                Label("Title & Icon", systemImage: "richtext.page")
+            }
         }
     }