[MM-43917] Cloud Freemium limits API: messages/posts (#20152)

* WIP - Add api and app funcs

* Add test cases

* Add utils testcases

* Exclude deleted posts

* Add doc for func

* Move api from cloud to usage

* Allow api access to authenticated users

* Change int to int64

* Fix lint issue

* Simplify err check

Co-authored-by: Ashish Bhate <ashish.bhate@mattermost.com>

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>
Co-authored-by: Ashish Bhate <ashish.bhate@mattermost.com>

store/timerlayer/timerlayer.go

@@ -4859,10 +4859,10 @@ func (s *TimerLayerPluginStore) SetWithOptions(pluginID string, key string, valu
 	return result, err
 }
 
-func (s *TimerLayerPostStore) AnalyticsPostCount(teamID string, mustHaveFile bool, mustHaveHashtag bool) (int64, error) {
+func (s *TimerLayerPostStore) AnalyticsPostCount(options *model.PostCountOptions) (int64, error) {
 	start := timemodule.Now()
 
-	result, err := s.PostStore.AnalyticsPostCount(teamID, mustHaveFile, mustHaveHashtag)
+	result, err := s.PostStore.AnalyticsPostCount(options)
 
 	elapsed := float64(timemodule.Since(start)) / float64(timemodule.Second)
 	if s.Root.Metrics != nil {