Add DevTools self-update command

Author: coisa

src/Console/Command/SelfUpdateCommand.php

@@ -66,20 +66,12 @@ public static function getCommandNames(): array
         }
 
         $reflection = new ReflectionClass(self::class);
-        $attribute = $reflection->getAttributes(AsCommand::class)[0] ?? null;
-
-        if (null === $attribute) {
-            return $commandNames = [];
-        }
-
-        $arguments = $attribute->getArguments();
-        $commandName = $arguments['name'] ?? $arguments[0] ?? '';
-        $aliases = $arguments['aliases'] ?? $arguments[2] ?? [];
-        $commandNames = [$commandName, ...((array) $aliases)];
+        $arguments = $reflection->getAttributes(AsCommand::class)[0]->getArguments();
+        $commandNames = [$arguments['name'], ...$arguments['aliases']];
 
         return $commandNames = array_values(array_filter(
             $commandNames,
-            static fn(mixed $commandName): bool => \is_string($commandName) && '' !== $commandName,
+            static fn(string $commandName): bool => '' !== $commandName,
         ));
     }