I've made Polish keyboard layout for physically Danish keyboard

Greetings.

Unfortunately there was no Polish keyboard layout in the settings for this laptop, so I've made mine. What do you think and if it's a feature needed by more than 1 user, how can I upstream it? Also I would like to make it's install easy, instead of manual patching, so I'm open to your suggestions how to do it.

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Context:

Recently I've bought a cheap used Thinkpad to mess around with the software and hardware. And it has Danish keyboard. Polish has layouts for US and GB keyboards, but this is a rare case. So I've looked at the files of Danish and Polish layouts, put Polish symbols into Danish layout and pasted it into Polish layout as a variant at /etc.

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In case you need it: https://github.com/Durbich/Polish-Danish-QWERTY

Github version has word Danish instead of LEGO as on the screenshot