feat(camera): add plugin for Android and iOS

plugins/camera/build.rs

@@ -0,0 +1,16 @@
+// Copyright 2019-2022 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
+use std::process::exit;
+
+fn main() {
+    if let Err(error) = tauri_build::mobile::PluginBuilder::new()
+        .android_path("android")
+        .ios_path("ios")
+        .run()
+    {
+        println!("{error:#}");
+        exit(1);
+    }
+}