refactor: clean up and consolidate button component Twig template logic; update to support including certain classes on the outer custom element + inner rendered button or link as well
refactor: clean up and consolidate button component Twig template logic; update to support including certain classes on the outer custom element + inner rendered button or link as well

bolt-design-system/bolt,bolt-design-system/bolt,bolt-design-system/bolt,bolt-design-system/bolt,bolt-design-system/bolt