replace log.Fatal/os.Exit with error returns (#941)

* Use stdlib encoders
* Reduce some duplication
* Remove global pagination state
* Dedupe JSON detail types
* Bump golangci-lint

Reviewed-on: https://gitea.com/gitea/tea/pulls/941
Co-authored-by: techknowlogick <techknowlogick@gitea.com>
Co-committed-by: techknowlogick <techknowlogick@gitea.com>

cmd/login/list.go

@@ -30,6 +30,5 @@ func RunLoginList(_ context.Context, cmd *cli.Command) error {
 	if err != nil {
 		return err
 	}
-	print.LoginsList(logins, cmd.String("output"))
-	return nil
+	return print.LoginsList(logins, cmd.String("output"))
 }