chore: add license headers (#384)

* feat: check for license headers

* add headers

* format

plugins/websocket/examples/svelte-app/src-tauri/build.rs

@@ -1,3 +1,7 @@
+// Copyright 2019-2023 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
 fn main() {
   tauri_build::build()
 }

plugins/websocket/examples/svelte-app/src-tauri/src/main.rs

@@ -1,3 +1,7 @@
+// Copyright 2019-2023 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
 #![cfg_attr(
   all(not(debug_assertions), target_os = "windows"),
   windows_subsystem = "windows"

plugins/websocket/examples/svelte-app/src/app.d.ts

@@ -1,3 +1,7 @@
+// Copyright 2019-2023 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
 // See https://kit.svelte.dev/docs/types#app
 // for information about these interfaces
 // and what to do when importing types

plugins/websocket/examples/svelte-app/svelte.config.js

@@ -1,3 +1,7 @@
+// Copyright 2019-2023 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
 import adapter from "@sveltejs/adapter-auto";
 import { vitePreprocess } from "@sveltejs/kit/vite";
 

plugins/websocket/examples/svelte-app/vite.config.ts

@@ -1,3 +1,7 @@
+// Copyright 2019-2023 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
 import { sveltekit } from "@sveltejs/kit/vite";
 import type { UserConfig } from "vite";
 

plugins/websocket/guest-js/index.ts

@@ -1,3 +1,7 @@
+// Copyright 2019-2023 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
 import { invoke, transformCallback } from "@tauri-apps/api/tauri";
 
 export interface MessageKind<T, D> {

plugins/websocket/src/lib.rs

@@ -1,3 +1,7 @@
+// Copyright 2019-2023 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
 use futures_util::{stream::SplitSink, SinkExt, StreamExt};
 use serde::{ser::Serializer, Deserialize, Serialize};
 use tauri::{