enhance: support like '--name, -n' on use rule

Author: inhere

src/AbstractFlags.php

@@ -702,6 +702,9 @@ protected function parseRuleOptName(string $key): array
         // TIP: first is the option name. remaining is shorts.
         $shorts = [];
         foreach ($keys as $i => $k) {
+            // support like '--name, -n'
+            $k = ltrim($k, '-');
+
             if ($i === 0) {
                 $name = $k;
             } else {