[SDK] add WithEventsCh settle option

[louisinger]

This PR adds a way to inspect the settlement process by replaying theRoundEvent received from the server to a custom channel created by the client. It also allow to do the same with JS using a callback function.

Golang

eventsCh := make(chan client.RoundEvent)
defer close(eventsCh)
go func() {
	for event := range eventsCh {
		fmt.Println(event)
	}
}()

resp, err := arkSdkClient.Settle(context.Background(), arksdk.WithEventsCh(eventsCh))
if err != nil {
	return nil, err
}

WASM JS wrapper

await settle((e) => console.log(JSON.parse(e)));

@tiero @bordalix @altafan @sekulicd please review

[sekulicd]

@louisinger which use cases this helps with?

[tiero]

@louisinger which use cases this helps with?

clients can monitor settlement events for better UX instead now await settle() dont' really communicate the progression of the settlement process.