Add issue comment when moving issues from one column to another of the project (#29311)

Fix #27278
Replace #27816

This PR adds a meta-comment for an issue when dragging an issue from one
column to another of a project.

<img width="600" alt="image"
src="https://github.com/go-gitea/gitea/assets/81045/5fc1d954-430e-4db0-aaee-a00006fa91f5">

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: yp05327 <576951401@qq.com>

models/migrations/migrations.go

@@ -597,6 +597,8 @@ var migrations = []Migration{
 	NewMigration("Add skip_secondary_authorization option to oauth2 application table", v1_23.AddSkipSecondaryAuthColumnToOAuth2ApplicationTable),
 	// v302 -> v303
 	NewMigration("Add index to action_task stopped log_expired", v1_23.AddIndexToActionTaskStoppedLogExpired),
+	// v303 -> v304
+	NewMigration("Add metadata column for comment table", v1_23.AddCommentMetaDataColumn),
 }
 
 // GetCurrentDBVersion returns the current db version

models/migrations/v1_23/v303.go

@@ -0,0 +1,23 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package v1_23 //nolint
+
+import (
+	"xorm.io/xorm"
+)
+
+// CommentMetaData stores metadata for a comment, these data will not be changed once inserted into database
+type CommentMetaData struct {
+	ProjectColumnID    int64  `json:"project_column_id"`
+	ProjectColumnTitle string `json:"project_column_title"`
+	ProjectTitle       string `json:"project_title"`
+}
+
+func AddCommentMetaDataColumn(x *xorm.Engine) error {
+	type Comment struct {
+		CommentMetaData *CommentMetaData `xorm:"JSON TEXT"` // put all non-index metadata in a single field
+	}
+
+	return x.Sync(new(Comment))
+}