New Version Script

[stevarino]

Put together a quick version updater script for adding a new version to minecraft-data.

My 1.19.21 PR (https://github.com/PrismarineJS/minecraft-data/pull/622) was put together with just this script. Not pretty, but it works. Happy to iterate on style if needed.

Currently untested for pc platform.

[stevarino]

Left a stub in case someone wants to add pc data later, as there are a lot of similar steps in pc version incrementing.

[extremeheat]

Lgtm, but have not tested yet.

[rom1504]

let's merge after it has been tried at least once