--driver-port option is wrong

[Lemmmy]

https://github.com/neumino/reqlite/blob/cae3a76d9e52135d0da3cabbcc5374be9dc84ea2/bin/reqlite#L10-L14

Here, --driver-port is implemented the same way as --port-offset, this seems to be unintentional. The effect of this is that passing --driver-port 28016 gives you the port 56031.