Refactor: Move list print functions into print package (#273)

MV list issues -> print.IssuesList

MV list labels -> print.LabelsList & task.LabelsExport

MV list logins -> print.LoginsList

MV list miles -> print.MilestonesList

MV list pulls -> print.PullsList

MV list releases -> print.ReleasesList

MV list issues&pulls of mile -> print.IssuesPullsList

MV list notification threads -> print.NotificationsList

Unexport print.outputList

Unexport print.outputMarkdown

remove comd/flags dependency in print module

Reviewed-on: https://gitea.com/gitea/tea/pulls/273
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Reviewed-by: Andrew Thornton <art27@cantab.net>
Co-Authored-By: 6543 <6543@obermui.de>
Co-Committed-By: 6543 <6543@obermui.de>

modules/task/labels_export.go

@@ -0,0 +1,29 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package task
+
+import (
+	"fmt"
+	"log"
+	"os"
+
+	"code.gitea.io/sdk/gitea"
+)
+
+// LabelsExport save list of labels to disc
+func LabelsExport(labels []*gitea.Label, path string) error {
+	f, err := os.Create(path)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer f.Close()
+
+	for _, label := range labels {
+		if _, err := fmt.Fprintf(f, "#%s %s\n", label.Color, label.Name); err != nil {
+			return err
+		}
+	}
+	return nil
+}