[TODO] Extract BlockState parsing into virion

[inxomnyaa]

Description: Currently libstructure still depends on MagicWE2. This should be changed to allow use of the library in other projects.

This would also ease maintainability in MWE2 & the BlockState parsing.

The repo is currently already present here, but without any of the PM code.

---

TODO list:

• [x] Create virion
• [x] Use virion in MagicWE2
• [ ] Make libstructure depend on this virion (if possible)
• [ ] Rewrite some of the stuff

[inxomnyaa]

libblockstate is mostly finalized