Add missing icons

Author: SimonSchubert

desktopApp/build.gradle.kts

@@ -47,6 +47,17 @@ compose.desktop {
             targetFormats(TargetFormat.Dmg, TargetFormat.Msi, TargetFormat.Deb, TargetFormat.Rpm, TargetFormat.AppImage)
             packageName = "LinuxCommandLibrary"
             packageVersion = libs.versions.appVersion.get()
+
+            macOS {
+                iconFile.set(project.file("icon.icns"))
+            }
+            windows {
+                iconFile.set(project.file("icon.ico"))
+            }
+            linux {
+                iconFile.set(project.file("icon.png"))
+                modules("jdk.security.auth")
+            }
         }
     }
 }