Is it possible to format the Shopware code (Twig, JS, TS, Vue and SCSS) of a plugin without installing third party tools? Maybe with a bin/console command? From my research, I haven't found something (except for the core itself).

If not, maybe it would be a good idea to create something for the community. It should be added directly into Shopware. It would benefit greatly from it. Usually, the code is not clean across different plugins, I conclude from my observation in the last year.