feat(bundler): Add Debian package support for updater bundles

.changes/deb-updater-support.md

@@ -0,0 +1,6 @@
+---
+'@tauri-apps/cli': minor:feat
+'@tauri-apps/bundler': minor:feat
+---
+
+Add support for Debian (`.deb`) packages in the updater bundle system, enabling self-contained updater functionality for Debian packages alongside existing formats like AppImage, NSIS, and Windows MSI.

crates/tauri-bundler/src/bundle.rs

@@ -151,6 +151,7 @@ pub fn bundle_project(settings: &Settings) -> crate::Result<Vec<Bundle>> {
             | PackageType::MacOsBundle
             | PackageType::Nsis
             | PackageType::WindowsMsi
+            | PackageType::Deb
         )
       } else {
         matches!(package_type, PackageType::MacOsBundle)
@@ -166,7 +167,7 @@ pub fn bundle_project(settings: &Settings) -> crate::Result<Vec<Bundle>> {
         // Self contained updater, no need to zip
         matches!(
           package_type,
-          PackageType::AppImage | PackageType::Nsis | PackageType::WindowsMsi
+          PackageType::AppImage | PackageType::Nsis | PackageType::WindowsMsi | PackageType::Deb
         )
       })
     {

crates/tauri-cli/src/bundle.rs

@@ -226,7 +226,11 @@ fn sign_updaters(
     .filter(|bundle| {
       matches!(
         bundle.package_type,
-        PackageType::Updater | PackageType::Nsis | PackageType::WindowsMsi | PackageType::AppImage
+        PackageType::Updater
+          | PackageType::Nsis
+          | PackageType::WindowsMsi
+          | PackageType::AppImage
+          | PackageType::Deb
       )
     })
     .collect();