MM-43956: Adds post counts by duration. (#20131)

* MM-43956: Adds post counts by day.

* MM-43956: Test data cleanup. Switch from Unix to UnixMilli.

* MM-43956: Changes from selecting date data types to strings in SQL.

* MM-43956: Fixes date format key.

* MM-43956: Adds missing user id scope for 'my' top channels graph.

* MM-43956: Adds the ability to group post counts by hour.

* MM-43956: Require enterprise or professional license. Reject guests.

* MM-43956: Adds license for tests.

* MM-43956: Renames function.

* MM-43956: Omits future hours from post counts by hour.

* MM-43956: Adjust API response grouping to users timezone.

* MM-43956: Adds translation.

* MM-43956: Adds user's timezone to the data tier for the grouping by day and hour.

* MM-43956: Fixes layers.

* MM-43956: Lint fix.

* MM-43956: Fix store layers.

* MM-43956: Switches to default name for time package; changes parameter names to avoid naming conflict.

* MM-43956: Updates mocks.

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

store/layer_generators/timer_layer.go.tmpl

@@ -8,7 +8,7 @@ package timerlayer
 
 import (
 	"context"
-	timemodule "time"
+    "time"
 
     "github.com/mattermost/mattermost-server/v6/einterfaces"
 	"github.com/mattermost/mattermost-server/v6/model"
@@ -38,13 +38,13 @@ type {{.Name}} struct {
 {{range $substoreName, $substore := .SubStores}}
 {{range $index, $element := $substore.Methods}}
 func (s *{{$.Name}}{{$substoreName}}Store) {{$index}}({{$element.Params | joinParamsWithType}}) {{$element.Results | joinResultsForSignature}} {
-	start := timemodule.Now()
+	start := time.Now()
 	{{if $element.Results | len | eq 0}}
 	s.{{$substoreName}}Store.{{$index}}({{$element.Params | joinParams}})
 	{{else}}
 	{{genResultsVars $element.Results false }} := s.{{$substoreName}}Store.{{$index}}({{$element.Params | joinParams}})
 	{{end}}
-	elapsed := float64(timemodule.Since(start)) / float64(timemodule.Second)
+	elapsed := float64(time.Since(start)) / float64(time.Second)
 	if s.Root.Metrics != nil {
 		success := "false"
 		if {{$element.Results | errorToBoolean}} {