Support query params `/?board=abc`

[accforgithubtest]

This feature request is similar to the one I raised for dumbwhois, which works great.

Would you pls consider adding support for opening a board directly via links ?
For example, these links would open the board mentioned in the url param /?board=

https://dumbkan.local.host/?board=work
https://dumbkan.local.host/?board=abc
https://dumbkan.local.host/?board=xyz

Cheers!