Use thiserror for error handling with less boilerplate

src/multi_format_writer.rs

@@ -72,7 +72,7 @@ impl Writer for MultiFormatWriter {
             BarcodeFormat::DATA_MATRIX => Box::<DataMatrixWriter>::default(),
             BarcodeFormat::AZTEC => Box::<AztecWriter>::default(),
             _ => {
-                return Err(Exceptions::illegalArgumentWith(format!(
+                return Err(Exceptions::illegal_argument_with(format!(
                     "No encoder available for format {format:?}"
                 )))
             }