Provide way to access all stored routes, methods, and payload

[matthewmcgarvey]

Lucky provides a way to print all routes to the console that shows the path, request method, and which action it's connected to

https://github.com/luckyframework/lucky/blob/dfdcc9e01e69eb8d38ed47d670357ebe551adbd1/tasks/routes.cr#L26

But that is fulfilled by essentially duplicating route storage because LuckyRouter doesn't have a way to access all available routes

https://github.com/luckyframework/lucky/blob/dfdcc9e01e69eb8d38ed47d670357ebe551adbd1/src/lucky/router.cr#L3

Without duplicating stored routes, it should be possible to piece the stored routes back together for this kind of functionality.