[Feature Request]: Add support for Open Parties and Claims mod

[astridos2go]

Hi, I use squaremap on a Vanilla-style server that I host. We love using the map to see where everyone is. However, recently, I installed a mod called Open Parties and Claims which allows for chunk claiming and parties.

I know there is an existing add-on for Claim Chunks, but would love to see support for Open Parties and Claims as well! This would be super nice because then anyone using the map could see the claimed chunks.

OPAC does support Xaero's mini-map and world map, so I'd imagine the functionality should already be there. However, as my server is more geared to letting players just join with Vanilla clients, it would be much easier to have that functionality in the squaremap.

Please let me know if you need anything else from me! Thank you!