[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>

store/timerlayer/timerlayer.go

@@ -4970,6 +4970,22 @@ func (s *TimerLayerPostStore) GetFlaggedPostsForTeam(userID string, teamID strin
 	return result, err
 }
 
+func (s *TimerLayerPostStore) GetLastPostRowCreateAt() (int64, error) {
+	start := timemodule.Now()
+
+	result, err := s.PostStore.GetLastPostRowCreateAt()
+
+	elapsed := float64(timemodule.Since(start)) / float64(timemodule.Second)
+	if s.Root.Metrics != nil {
+		success := "false"
+		if err == nil {
+			success = "true"
+		}
+		s.Root.Metrics.ObserveStoreMethodDuration("PostStore.GetLastPostRowCreateAt", success, elapsed)
+	}
+	return result, err
+}
+
 func (s *TimerLayerPostStore) GetMaxPostSize() int {
 	start := timemodule.Now()
 
@@ -6553,6 +6569,22 @@ func (s *TimerLayerSessionStore) Get(ctx context.Context, sessionIDOrToken strin
 	return result, err
 }
 
+func (s *TimerLayerSessionStore) GetLastSessionRowCreateAt() (int64, error) {
+	start := timemodule.Now()
+
+	result, err := s.SessionStore.GetLastSessionRowCreateAt()
+
+	elapsed := float64(timemodule.Since(start)) / float64(timemodule.Second)
+	if s.Root.Metrics != nil {
+		success := "false"
+		if err == nil {
+			success = "true"
+		}
+		s.Root.Metrics.ObserveStoreMethodDuration("SessionStore.GetLastSessionRowCreateAt", success, elapsed)
+	}
+	return result, err
+}
+
 func (s *TimerLayerSessionStore) GetSessions(userID string) ([]*model.Session, error) {
 	start := timemodule.Now()