feat(view): implement the possibility to specify possible values

I went with the keyword "possible", because "acceptedValues" would imply some kind of validation behind the scenes - which may not necessarily be present.

Author: xHeaven

packages/view/src/ViewComponentParameter.php

@@ -13,5 +13,6 @@ public function __construct(
         public bool $required = false,
         public ?string $description = null,
         public mixed $default = null,
+        public ?array $possibleValues = null,
     ) {}
 }