Move `dxf` Library to Gradle

[Stefterv]

Most relevant area for this enhancement?

Build process

Feature to enhance

Build system

Desired enhancement

In PR #888 I took a little shortcut with the existing Java based libraries and made them still reliant on the old Ant build system.

We would need the ant based build.xml to be replaced by a proper build.gradle.kts version to further remove our reliance on Ant

Potential benefits

No response

Possible drawbacks

No response

Additional context

No response

Would you like to work on the issue?

Someone else can work on this