Hello,
While this is a good idea, I have not developed any BTCPay wallet adapter, and it’s not possible for me to develop one at this time.
If you are interested in developing a wallet adapter yourself, or if you plan to hire a developer, I have provided information here:
Sample code (stubs) are here: https://github.com/dashed-slug/my-wallet-adapter
I am always available to answer any questions about this.
with regards