add gitleak to cli

cli/packages/models/error.go

@@ -1,17 +0,0 @@
-package models
-
-import log "github.com/sirupsen/logrus"
-
-// Custom error type so that we can give helpful messages in CLI
-type Error struct {
-	Err             error
-	FriendlyMessage string
-}
-
-func (e *Error) printFriendlyMessage() {
-	log.Infoln(e.FriendlyMessage)
-}
-
-func (e *Error) printDebuError() {
-	log.Debugln(e.Err)
-}