Unable to read `.well-known` directory in routes

[jtag05]

fast-glob ignores dotfiles by default so the following line will ignore a .well-known directory and any other dotfiles when using the FileRoutes

https://github.com/solidjs/solid-start/blob/842f2751795a181ec3a9975f18a008344192535a/packages/start/fs-router/router.js#L46

I'm not sure if this was an intentional design decision or not, but I'll put up a PR momentarily in the event that this functionality would be useful to people other than myself