feat: appimage package script

revert: flutter lock file

src/ui.rs

@@ -57,7 +57,10 @@ pub fn start(args: &mut [String]) {
     }
     #[cfg(all(target_os = "linux", feature = "inline"))]
     {
+        #[cfg(feature = "appimage")]
         let prefix = std::env::var("APPDIR").unwrap_or("".to_string());
+        #[cfg(not(feature = "appimage"))]
+        let prefix = "".to_string();
         sciter::set_library(&(prefix + "/usr/lib/rustdesk/libsciter-gtk.so")).ok();
     }
     // https://github.com/c-smile/sciter-sdk/blob/master/include/sciter-x-types.h