docs(shell): update example to include Encoding usage in Command::spawn

.changes/doc-to-Encoding-usage-in-shell.md

@@ -0,0 +1,4 @@
+---
+"shell": patch
+---
+Docs on example to Encoding usage in `Command::spawn`. No user facing changes.

plugins/shell/src/process/mod.rs

@@ -262,6 +262,31 @@ impl Command {
     ///     Ok(())
     /// });
     /// ```
+    ///
+    /// # Examples Mannual Encoding
+    ///
+    /// ```rust,no_run
+    /// use tauri_plugin_shell::{process::{CommandEvent, Encoding}, ShellExt};
+    /// tauri::Builder::default()
+    ///   .setup(|app| {
+    ///     let handle = app.handle().clone();
+    ///     tauri::async_runtime::spawn(async move {
+    ///       let (mut rx, mut child) = handle.shell().command("cargo")
+    ///         .args(["tauri", "dev"])
+    ///         .spawn()
+    ///         .expect("Failed to spawn cargo");
+    ///
+    ///      let encoding = Encoding::for_label(b"utf-8").unwrap();
+    ///       while let Some(event) = rx.recv().await {
+    ///         if let CommandEvent::Stdout(line) = event {
+    ///           let (decoded, _, _) = encoding.decode(&line);
+    ///           println!("got: {}", decoded);
+    ///         }
+    ///       }
+    ///     });
+    ///     Ok(())
+    /// });
+    /// ```
     pub fn spawn(self) -> crate::Result<(Receiver<CommandEvent>, CommandChild)> {
         let raw = self.raw_out;
         let mut command: StdCommand = self.into();