Allow hooks in different directories like you do for layouts

[tompahoward]

I have some hooks that check for authentication on certain paths, like /app, and they're working well, but I realised it would be nicer if I could put this in routes/app/hooks.server.ts so I don't need to maintain the path-checking logic.

Even nicer would be putting it in routes/(authenticated)/hooks.server.ts because then we wouldn't even need to maintain a list of what requires authentication; we just make sure it's in the (authenticated) group. We could even have routes/(authenticated)/(admin)/hooks.server.ts to limit pages in routes/(authenticated)/(admin) to users who are admins.

Anyway, just a thought. Thanks for considering.