allow paying with crypto via BTCPay and/or trocador

**Is your feature request related to a problem? Please describe.**
im always frustrated when i want to donate but can't because i dont have a bank card that stripe would accept because im russian and its all sanctioned and I can only pay with crypto

**Describe the solution you'd like**
make a BTCPay server or something so that i (and others like me) could pay w crypto (preferably monero). its also a good idea to have a [trocador link](https://trocador.app/anonpay) because people usually have usdc/usdt on some random chain and not monero

**Describe alternatives you've considered**
buy a prepaid visa gift card for 5$ at XMR.cards but stripe wont accept that because its like a very shady card and very few websites accept it anyway

**Additional context**
im not sure if this is the right place to request this sort of feature because i think this repository is for like code of the actual game and not necessarily the business aspect but i assume yall need funding and might be unknowingly shutting out a group of people who want to donate but cant because they are like removed from the orthodox banking system

**Assignment**

- [ ] I'd like to be assigned to this issue and work on it myself

No files, tests, or entry points are named. First determine whether donation infrastructure belongs in this repository, then investigate how BTCPay Server or a Trocador link could be integrated. Done would mean users can donate through a supported crypto payment path, preferably including Monero.

Written by the indexing model from the issue text.