add support to delete all unclaimed chunks from ftb chunks

I looked into the code of the FTB Team.

While it is possible to do so. It wouldn't be possible without breaking their license.
I requested permission to copy the required piece of code to make it happen but I can not do anything unless they do give me permission to do so.

A alternative workaround for you is to allow people to "chunk load claimed" chunks because any loaded chunk will not be deleted from chunk pregen.

We have an api

Yeah sorry Error_MiKeY but without a explicit permission from the FTB Team to use said API (in this case copying part of their library) I will not touch a "All Rights Reserved Mod".

And this is not a "permission granted" to do so.

I send you per PM what exactly what I want to do and what I need to do it.
If I get the explicit permission to do it I can make it work.

Ok putting that feature request on hold for now since no agreement could be achieved.
Though just putting out I am asking for a lot and it is fine if they say no to it.

But I have their permission to use their API if I want to implement it using their API instead of the path I wanted to go.

I might come up with better solutions later or jump over my pickyness.

Found a way to do that.

Since the FTBChunks API requires that I have a huge dependency on my IDE my solution is to just use my own hacky way to support it.

The Dev of FTB chunks isn't really a fan of the idea buuuuuut it works, doesn't break the license agreement.

Will take a bit when i will act on it though since i am now watching 1.19 ports which have a lot higher priority.