PLT-6408 Framework for job server (#6404)

* Added initial job server

* Added job server to be ran as part of platform

* Added test job to the enterprise repo

* Fixed job server not loading license

* Renamed job package to jobs

* Fixed TE not being buildable

* Added JobStatus table to database

* Changed fields used by JobStatus

* Added APIs to query job status

* Added config change listener to server

* Added option to run job server from Makefile

* Added ability to enable/disable jobs from config

* Commented out placeholder for search indexing job

* Fixed govet

* Removed debug messages and fixed job api init message

cmd/platform/mattermost.go

@@ -14,6 +14,9 @@ import (
 	// Plugins
 	_ "github.com/mattermost/platform/model/gitlab"
 
+	// Enterprise Imports
+	_ "github.com/mattermost/platform/imports"
+
 	// Enterprise Deps
 	_ "github.com/dgryski/dgoogauth"
 	_ "github.com/go-ldap/ldap"
@@ -26,8 +29,6 @@ import (
 	_ "gopkg.in/olivere/elastic.v5"
 )
 
-//ENTERPRISE_IMPORTS
-
 func main() {
 	if err := rootCmd.Execute(); err != nil {
 		os.Exit(1)