feat(routing): recursively add routs in routs/root/ folder

@crazyscouter @TrinityX please review

implements recursive addition of all routs in routs/root folder

ie a rout handler located in
```
routs/root/user/foo.js
```
will be exposed as
```
http://localhost:300/routs/user/foo
```

debugging:
```shell
DEBUG=routing node bin/www
```