sysutils/fusefs-xfs: update to 0.4.3

Version 0.1.0 was more of a "technology preview". The current version
contains many bug fixes and works with most real-world datasets.

Also, take maintainership, because I've also assumed upstream
maintainership.

https://github.com/KhaledEmaraDev/xfuse/blob/main/CHANGELOG.md

Sponsored by: Axcient
Reviewed by: fuz
Differential Revision: https://reviews.freebsd.org/D45925