[MM-40917] - Inactive Server Email Notification (#19374)

* [MM-40917] - Inactive Server Email Notification

* add email template

* make store layers

* add some store tests

* fix translations

* fix logic

* improve

* fix lint

* feedback-impl

* fix wrong text

* optimize queries

* move feature flag check

* feedback impl-1

* add line

* feedback impl

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

app/server.go

@@ -633,6 +633,7 @@ func NewServer(options ...Option) (*Server, error) {
 		s.Go(func() {
 			appInstance := New(ServerConnector(s.Channels()))
 			s.runLicenseExpirationCheckJob()
+			s.runInactivityCheckJob()
 			runDNDStatusExpireJob(appInstance)
 		})
 		s.runJobs()
@@ -1478,6 +1479,12 @@ func runJobsCleanupJob(s *Server) {
 	}, time.Hour*24)
 }
 
+func (s *Server) runInactivityCheckJob() {
+	model.CreateRecurringTask("Server inactivity Check", func() {
+		s.doInactivityCheck()
+	}, time.Hour*24)
+}
+
 func (s *Server) runLicenseExpirationCheckJob() {
 	s.doLicenseExpirationCheck()
 	model.CreateRecurringTask("License Expiration Check", func() {