feat: add new fixed formatter option

src/format/mod.rs

@@ -10,9 +10,15 @@ pub fn fmt_message(mes: &mut Vec<Message>, opt: FormatOptions, typ: ScriptType)
             length,
             keep_original,
             break_words,
+            insert_fullwidth_space_at_line_start,
         } => {
-            let formatter =
-                fixed::FixedFormatter::new(length, keep_original, break_words, Some(typ));
+            let formatter = fixed::FixedFormatter::new(
+                length,
+                keep_original,
+                break_words,
+                insert_fullwidth_space_at_line_start,
+                Some(typ),
+            );
             for message in mes.iter_mut() {
                 message.message = formatter.format(&message.message);
             }