Adding the phone number apis (#703)

* Adding the phone number apis

* Changing phonenumber to number for command and making search result rendering block more readable

* tidy

* Removed the page token for now and updating some more params from phonenumber(s) to number(s)

Author: nishadmusthafa

cmd/lk/main.go

@@ -68,6 +68,7 @@ func main() {
 	app.Commands = append(app.Commands, EgressCommands...)
 	app.Commands = append(app.Commands, IngressCommands...)
 	app.Commands = append(app.Commands, SIPCommands...)
+	app.Commands = append(app.Commands, PhoneNumberCommands...)
 	app.Commands = append(app.Commands, ReplayCommands...)
 	app.Commands = append(app.Commands, PerfCommands...)