feat(clipboard-manager): add support for writing secrets (#3376)

* feat(clipboard-manager): add support for writing secrets

add `write_secret` command that writes a text into the clipboard and
hints clipboard managers to not save the text.

uses `arboard`'s `SetExtLinux`, `SetExtWindows`, and `SetExtApple`
extensions for each platform.

* fix(clipboard-manager): require arboard 3.6

* chore(clipboard-manager): add license header to secret.rs

* fix(clipboard-manager): only exclude from monitoring on Windows

* refactor(clipboard-manager): replace ExcludeSecret trait with a function

* chore(clipboard-manager): drop redundant cfg(desktop) in desktop.rs

* refactor(clipboard-manager): share clipboard access in a helper

* feat(clipboard-manager): implement write_secret on Android and iOS

* docs(clipboard-manager): document writeSecret

* chore(clipboard-manager): add change file for writeSecret

* test(clipboard-manager): cover writeSecret in e2e

---------

Co-authored-by: Lucas Nogueira <lucas@tauri.app>

examples/api/src/views/Clipboard.svelte

@@ -35,6 +35,13 @@
     }
   }
 
+  function writeSecret() {
+    clipboard.writeSecret(text).then(() => {
+      onMessage("Wrote secret to the clipboard")
+    })
+    .catch(onMessage)
+  }
+
   async function read() {
     try {
       const image = await clipboard.readImage()
@@ -63,6 +70,7 @@
     bind:value={text}
   />
   <button class="btn" type="button" on:click={writeText}>Write</button>
+  <button class="btn" type="button" on:click={writeSecret}>Write Secret</button>
   <button class="btn" type="button" on:click={writeImage}>Pick Image</button>
   <button class="btn" type="button" on:click={read}>Read</button>
 </div>