Enhance icon generation and update dependencies

- Added support for generating a multi-size Windows icon (icon.ico) in the update-icons.sh script.
- Updated Cargo.toml to include the 'windows' crate with specific features for Windows support.
- Bumped version of the 'voicebox' package from 0.1.0 to 0.1.1 in Cargo.lock.
- Updated .gitignore to exclude the generated Assets.car file.

tauri/src-tauri/Cargo.lock

@@ -4483,7 +4483,7 @@ checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
 
 [[package]]
 name = "voicebox"
-version = "0.1.0"
+version = "0.1.1"
 dependencies = [
  "base64 0.22.1",
  "core-foundation-sys",

tauri/src-tauri/Cargo.toml

@@ -31,6 +31,7 @@ core-foundation-sys = "0.8"
 
 [target.'cfg(target_os = "windows")'.dependencies]
 wasapi = "0.22"
+windows = { version = "0.62", features = ["Win32_Foundation", "Win32_UI_WindowsAndMessaging"] }
 
 [target.'cfg(not(any(target_os = "android", target_os = "ios")))'.dependencies]
 tauri-plugin-updater = "2.0"

tauri/src-tauri/src/main.rs

@@ -384,6 +384,24 @@ pub fn run() {
             #[cfg(desktop)]
             app.handle().plugin(tauri_plugin_updater::Builder::new().build())?;
 
+            // Hide title bar icon on Windows
+            #[cfg(windows)]
+            {
+                use windows::Win32::Foundation::HWND;
+                use windows::Win32::UI::WindowsAndMessaging::{SetClassLongPtrW, GCLP_HICON, GCLP_HICONSM};
+                
+                if let Some((_, window)) = app.webview_windows().iter().next() {
+                    if let Ok(hwnd) = window.hwnd() {
+                        let hwnd = HWND(hwnd.0);
+                        unsafe {
+                            // Set both small and regular icons to NULL to hide the title bar icon
+                            SetClassLongPtrW(hwnd, GCLP_HICON, 0);
+                            SetClassLongPtrW(hwnd, GCLP_HICONSM, 0);
+                        }
+                    }
+                }
+            }
+
             #[cfg(debug_assertions)]
             {
                 // Get all windows and open devtools on the first one