feat: Deduplicate fb2 authors

src/application/parsers/fb2.rs

@@ -255,5 +255,7 @@ pub fn parse_with_reader<R: BufRead>(reader: R, path: &Path) -> Result<Vec<Book>
         buf.clear();
     }
 
+    book.author.dedup_by(|a, b| a.uniq_id() == b.uniq_id());
+
     Ok(vec![book])
 }