[Feature Request] Monero integration for BTCPayServer

[deverickapollo]

Users should have the ability to enable monero support in BTCPayServer without manual configuration. The current BTCPayServer image would need to be modified to leverage the altcoin version for users that enable this feature. We will need to dynamically add environment variables to the docker-compose.yml to ensure BTCPayServer has access to the node + wallet if this feature is enabled. Ideally, we could leverage a library such as pyyaml to modify the docker-compose.

https://pyyaml.org/wiki/PyYAMLDocumentation