[MM-54770] Add ability to export profile pictures and fix importing them (#25042)

* add ability to export pp and fix import

* remove unused nopSeeker

* remove debug log

* fix shadow vars

* generate a warning instead of an error when unable to export profile picture

* fix merge conflicts

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

server/cmd/mmctl/commands/export.go

@@ -101,6 +101,7 @@ func init() {
 
 	ExportCreateCmd.Flags().Bool("no-attachments", false, "Exclude file attachments from the export file.")
 	ExportCreateCmd.Flags().Bool("include-archived-channels", false, "Include archived channels in the export file.")
+	ExportCreateCmd.Flags().Bool("include-profile-pictures", false, "Include profile pictures in the export file.")
 
 	ExportDownloadCmd.Flags().Bool("resume", false, "Set to true to resume an export download.")
 	_ = ExportDownloadCmd.Flags().MarkHidden("resume")
@@ -142,6 +143,11 @@ func exportCreateCmdF(c client.Client, command *cobra.Command, args []string) er
 		data["include_archived_channels"] = "true"
 	}
 
+	includeProfilePictures, _ := command.Flags().GetBool("include-profile-pictures")
+	if includeProfilePictures {
+		data["include_profile_pictures"] = "true"
+	}
+
 	job, _, err := c.CreateJob(context.TODO(), &model.Job{
 		Type: model.JobTypeExportProcess,
 		Data: data,

server/cmd/mmctl/docs/mmctl_export_create.rst

@@ -22,6 +22,7 @@ Options
 
   -h, --help                        help for create
       --include-archived-channels   Include archived channels in the export file.
+      --include-profile-pictures    Include profile pictures in the export file.
       --no-attachments              Exclude file attachments from the export file.
 
 Options inherited from parent commands