feat(shell): support opening URLs on mobile (#1319)

* feat(shell): support opening URLs on mobile

closes #595

* Update and rename StorePlugin.swift to ShellPlugin.swift

* unwrap

* fix func name (ios)

* use undeprecated func if avail

---------

Co-authored-by: fabianlars <fabianlars@fabianlars.de>

plugins/shell/ios/Package.swift

@@ -0,0 +1,33 @@
+// swift-tools-version:5.3
+// Copyright 2019-2023 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
+import PackageDescription
+
+let package = Package(
+    name: "tauri-plugin-shell",
+    platforms: [
+        .iOS(.v13),
+    ],
+    products: [
+        // Products define the executables and libraries a package produces, and make them visible to other packages.
+        .library(
+            name: "tauri-plugin-shell",
+            type: .static,
+            targets: ["tauri-plugin-shell"]),
+    ],
+    dependencies: [
+        .package(name: "Tauri", path: "../.tauri/tauri-api")
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
+        // Targets can depend on other targets in this package, and on products in packages this package depends on.
+        .target(
+            name: "tauri-plugin-shell",
+            dependencies: [
+                .byName(name: "Tauri")
+            ],
+            path: "Sources")
+    ]
+)