Created a neoforge 1.21.1 port

[AyOhEe]

Hi. It's not my greatest work, but I have a working port to neoforge 1.21.1 and create 6.0.4. I had to rewrite the buildscript and move to groovy instead of kotlin, but it does work. I don't know if you want to run with or modify this or use it as, but I thought it'd be useful.

https://github.com/AyOhEe/create-track-map/tree/neoforge/1.21

[AyOhEe]

I should say, this is missing the modrinth integration in the buildscript. I'm not all that familiar with them, so I left out what I had to.

[AyOhEe]

#89 #84 You may be interested. It's not great but it'll do for now.

[CreepyGamer355]

Thanks alot for you work, I - or rather We - really appreciate it! :)

[PGSCOM]

Thanks!!!

[DJKieranl29]

Please let me know when you add the schedules also I have been seeing a memory leak occurring with big maps on this version. On the browser side.