[MM-20979] Add first implementation of the Bleve search engine (#14562)

* [MM-20979] Add first implementation of the Bleve search engine

* Fix i18n

* Migrate searchengine utils tests

* Fix linter

* Don't add allTermsQ if both termQueries and notTermQueries are empty

* Fix test that should work if user is system admin

* Modify naming according to review comments

* Abstract getIndexDir function

* Extracting bleve engine name as a constant

* Merge both Indexer interfaces into one

* Add worker stopped message

* Allow worker to be started/stopped with config change

* Use constants for index names

* Modify test order

* Fix linter

* Trying to unlock the CI

app/enterprise.go

@@ -60,9 +60,9 @@ func RegisterJobsElasticsearchAggregatorInterface(f func(*Server) ejobs.Elastics
 	jobsElasticsearchAggregatorInterface = f
 }
 
-var jobsElasticsearchIndexerInterface func(*Server) ejobs.ElasticsearchIndexerInterface
+var jobsElasticsearchIndexerInterface func(*Server) tjobs.IndexerJobInterface
 
-func RegisterJobsElasticsearchIndexerInterface(f func(*Server) ejobs.ElasticsearchIndexerInterface) {
+func RegisterJobsElasticsearchIndexerInterface(f func(*Server) tjobs.IndexerJobInterface) {
 	jobsElasticsearchIndexerInterface = f
 }
 
@@ -84,6 +84,12 @@ func RegisterJobsPluginsJobInterface(f func(*App) tjobs.PluginsJobInterface) {
 	jobsPluginsInterface = f
 }
 
+var jobsBleveIndexerInterface func(*Server) tjobs.IndexerJobInterface
+
+func RegisterJobsBleveIndexerInterface(f func(*Server) tjobs.IndexerJobInterface) {
+	jobsBleveIndexerInterface = f
+}
+
 var ldapInterface func(*App) einterfaces.LdapInterface
 
 func RegisterLdapInterface(f func(*App) einterfaces.LdapInterface) {