[feature]: Expose RemoveUTXOLease RPC functionality to CLI

[dstadulis]

Motivation

Currently, if a bitcoin UTXO has been leased by the wallet and the user wants to unlease the output, the only supported method is by calling via the RPC via RemoveUTXOLease https://lightning.engineering/api-docs/api/taproot-assets/asset-wallet/remove-u-t-x-o-lease/index.html

Given more CLI users, adding the ability to call RemoveUTXOLease via the CLI will be helpful.

Prior PR which exposes functionality to CLI

https://github.com/lightninglabs/taproot-assets/pull/280/files