[API] Allow removing issues (#18879)

Add new feature to delete issues and pulls via API

Co-authored-by: fnetx <git@fralix.ovh>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Gusted <williamzijl7@hotmail.com>
Co-authored-by: 6543 <6543@obermui.de>

models/issue_comment.go

@@ -1152,9 +1152,7 @@ func DeleteComment(comment *Comment) error {
 }
 
 func deleteComment(e db.Engine, comment *Comment) error {
-	if _, err := e.Delete(&Comment{
-		ID: comment.ID,
-	}); err != nil {
+	if _, err := e.ID(comment.ID).NoAutoCondition().Delete(comment); err != nil {
 		return err
 	}