Support onboarding & Drop faucet (#119)

* Renaming

* Add server-side support for onboarding

* add onboard --amount command

* support client side onboarding

* Drop dummy tx builder

* Drop faucet

* Fixes

* fix public key encoding

* fix schnorr pub key check in validation

* fix server/README to accomodate onboarding

---------

Co-authored-by: Louis <louis@vulpem.com>
Co-authored-by: João Bordalo <bordalix@users.noreply.github.com>

client/main.go

@@ -57,17 +57,17 @@ func main() {
 
 	app.Version = version
 	app.Name = "Ark CLI"
-	app.Usage = "command line interface for Ark wallet"
+	app.Usage = "ark wallet command line interface"
 	app.Commands = append(
 		app.Commands,
 		&balanceCommand,
 		&configCommand,
 		&dumpCommand,
-		&faucetCommand,
 		&initCommand,
 		&receiveCommand,
 		&redeemCommand,
 		&sendCommand,
+		&onboardCommand,
 	)
 
 	app.Before = func(ctx *cli.Context) error {