Add more command shorthands (#307)

add more command aliases

breaking: s/notif/n

Co-authored-by: Norwin Roosen <git@nroo.de>
Reviewed-on: https://gitea.com/gitea/tea/pulls/307
Reviewed-by: 6543 <6543@obermui.de>
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-Authored-By: Norwin <noerw@noreply.gitea.io>
Co-Committed-By: Norwin <noerw@noreply.gitea.io>

cmd/issues.go

@@ -17,7 +17,7 @@ import (
 // CmdIssues represents to login a gitea server.
 var CmdIssues = cli.Command{
 	Name:        "issues",
-	Aliases:     []string{"issue"},
+	Aliases:     []string{"issue", "i"},
 	Usage:       "List, create and update issues",
 	Description: "List, create and update issues",
 	ArgsUsage:   "[<issue index>]",