fix(packaging): configure generated icons for Linux AppImage

src-tauri/tauri.conf.json

@@ -47,7 +47,14 @@
           "policykit-1"
         ]
       }
-    }
+    },
+    "icon": [
+      "icons/32x32.png",
+      "icons/128x128.png",
+      "icons/128x128@2x.png",
+      "icons/icon.icns",
+      "icons/icon.ico"
+    ]
   },
   "plugins": {
     "updater": {