Added a 200 MB file size limit

src/state/get_user.rs

@@ -17,6 +17,10 @@ fn validate_document(document: Option<&Document>) -> Result<&Document, &'static
         None => return Err("You didn't send a file. Try again"),
     };
 
+    if document.file.size > 1024 * 1024 * 200 {
+        return Err("The file is larger than 200 MiB. Try splitting it into multiple files");
+    }
+
     let name = match document.file_name.as_deref() {
         Some(name) => Path::new(name.trim_end()),
         None => return Err("Couldn't get the name of the file. Try sending it again"),