use autostart for --tray in linux because pkexec not work well when start it with --server

src/core_main.rs

@@ -41,6 +41,14 @@ pub fn core_main() -> Option<Vec<String>> {
         }
         i += 1;
     }
+    #[cfg(any(target_os = "linux", target_os = "windows"))]
+    if args.is_empty() {
+        #[cfg(target_os = "linux")]
+        hbb_common::allow_err!(crate::platform::check_autostart_config());
+        if crate::check_process("--server", false) && !crate::check_process("--tray", true) {
+            hbb_common::allow_err!(crate::run_me(vec!["--tray"]));
+        }
+    }
     #[cfg(not(debug_assertions))]
     #[cfg(not(any(target_os = "android", target_os = "ios")))]
     register_breakdown_handler(breakdown_callback);