Description
I'd love to allow bundles to have the exact same dir structure as full Symfony apps. It's such a concise, beautiful and self-explanatory structure!

So, now that we've added getPublicDir() in #31975 ... what about adding the rest of methods needed to customize the dir structure?

• getConfigDir()
• getTemplatesDir()
• getTranslationsDir()

src/ and tests/ can be customized in other ways (Composer, PHPUnit, etc.)