* Renamed `NWCClient` to `nwc.NewNWCClient(opts)` in `cmd/nwcclient/main.go`
* Added `RPCRaw` wrappers for NWC client methods in `pkg/protocol/nwc/methods.go`
**Updated walletcli main function**
* Updated the main function in `cmd/walletcli/main.go` to use new NWC client and RPCRaw wrappers
**Added new methods for walletcli**
* Added new methods for handling NWC client RPC calls, such as:
* `handleGetWalletServiceInfo`
* `handleMakeHoldInvoice`
* `handleSettleHoldInvoice`
* `handleCancelHoldInvoice`
**Code formatting and style changes**
* Formatted code according to Go standard
* Used consistent naming conventions and coding styles
**Other updates**
* Updated dependencies and imported packages accordingly
