Show client IPvX in WebUI

[puffpants]

When using the normal installed py-kms package, I was able to grep the log file to see the IP address of the client. I have moved to the docker container and when looking at the web interface, I do not see the IP address of the client, nor does it look to be saved in the pykms_database.db file. Can the IP address of the device requesting activation be added to the web interface?

[simonmicro]

You want to not only store the last contact time, but also the client IPvX address of the last contact. Yes, I think this is a fine addition.