[MM-55726] Create batch report worker, add batch report job for exporting users to CSV (#25832)

* Split out migration logic and create generic BatchWorker

* WIP

* WIP

* POC batch reporting

* Oops

* Job hookup

* Working export to file

* PR feedback

* Merge'd

* Fix error handling

* Add API to start report, translations, couple fixes

* Add DMs to send reports to users

* Merge'd

* Update types

* A bit of cleanup

* Some fixes

* Add missing API doc

* PR feedback

* Fix generated

* Fix bug with post creation

* PR feedback

* Add some tests

* PR feedback

* Fix lint

* Some test changes

* Fix tests

* Add comment to explain why we forcibly stop

* Rework of some tests

* Batch report test

* Restrict batch exports to Pro and Enterprise licenses

* Fix erroneous comment

---------

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

server/channels/app/server.go

@@ -44,6 +44,7 @@ import (
 	"github.com/mattermost/mattermost/server/v8/channels/jobs/expirynotify"
 	"github.com/mattermost/mattermost/server/v8/channels/jobs/export_delete"
 	"github.com/mattermost/mattermost/server/v8/channels/jobs/export_process"
+	"github.com/mattermost/mattermost/server/v8/channels/jobs/export_users_to_csv"
 	"github.com/mattermost/mattermost/server/v8/channels/jobs/extract_content"
 	"github.com/mattermost/mattermost/server/v8/channels/jobs/hosted_purchase_screening"
 	"github.com/mattermost/mattermost/server/v8/channels/jobs/import_delete"
@@ -1677,6 +1678,12 @@ func (s *Server) initJobs() {
 		refresh_post_stats.MakeScheduler(s.Jobs, *s.platform.Config().SqlSettings.DriverName),
 	)
 
+	s.Jobs.RegisterJobType(
+		model.JobTypeExportUsersToCSV,
+		export_users_to_csv.MakeWorker(s.Jobs, s.Store(), New(ServerConnector(s.Channels()))),
+		nil,
+	)
+
 	s.platform.Jobs = s.Jobs
 }