feat: Support for BTC/Sats Currency

[brennll]

Prerequisites

• I have searched for existing issues that already include this feature request, without success.

Describe the Feature Request

I know the app hasn't been maintained in a while, but I really love its simplicity — it gets my work done. It would be great if BTC/sats support was added 😏

Describe the Use Case

For btc maxi

Additional Information

No response