Adding bulk-indexing and improving a bit the name indexing for bleve and elasticsearch (#16704)

* Adding bulk-indexing and improving a bit the name indexing for bleve and elasticsearch

* Update services/searchengine/bleveengine/bleve.go

Co-authored-by: Mario de Frutos Dieguez <mario@defrutos.org>

* Update store/sqlstore/file_info_store.go

Co-authored-by: Mario de Frutos Dieguez <mario@defrutos.org>

* Update store/sqlstore/file_info_store.go

Co-authored-by: Mario de Frutos Dieguez <mario@defrutos.org>

* Adding tests requested in the PR review

* fixing tests

* Adding a feature flag to avoid indexing files before the feature is released

* Fixing i18n

Co-authored-by: Mario de Frutos Dieguez <mario@defrutos.org>
Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

store/store.go

@@ -580,6 +580,8 @@ type FileInfoStore interface {
 	PermanentDeleteByUser(userId string) (int64, error)
 	SetContent(fileID, content string) error
 	Search(paramsList []*model.SearchParams, userId, teamID string, page, perPage int) (*model.FileInfoList, error)
+	CountAll() (int64, error)
+	GetFilesBatchForIndexing(startTime, endTime int64, limit int) ([]*model.FileForIndexing, error)
 	ClearCaches()
 }