Support for silent payment addresses

[RasheedAZ]

Hi. Thanks for making this awesome plugin.

Is it possible to add support for silent payment addresses?

They are much longer than the address lengths currently allowed for BTC addresses.

[jjs2484]

Interesting concept but still not enough wallet support yet - https://silentpayments.xyz/docs/wallets/

Would continue to use HD wallets like electrum for privacy purposes until this has more support.