feat(pdf): embed Typst compiler with compile_pdf command

src-tauri/src/lib.rs

@@ -1,7 +1,10 @@
+mod pdf;
+
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     tauri::Builder::default()
         .plugin(tauri_plugin_opener::init())
+        .invoke_handler(tauri::generate_handler![pdf::compile_pdf])
         .run(tauri::generate_context!())
         .expect("error while running margin");
 }