Update migrated repositories' issues/comments/prs poster id if user has a github external user saved (#7751)

* update migrated issues/comments when login as github

* add get userid when migrating or login with github oauth2

* fix lint

* add migrations for repository service type

* fix build

* remove unnecessary dependencies on migrations

* add cron task to update migrations poster ids and fix posterid when migrating

* fix lint

* fix lint

* improve code

* fix lint

* improve code

* replace releases publish id to actual author id

* fix import

* fix bug

* fix lint

* fix rawdata definition

* fix some bugs

* fix error message

modules/setting/cron.go

@@ -49,6 +49,9 @@ var (
 			Schedule   string
 			OlderThan  time.Duration
 		} `ini:"cron.deleted_branches_cleanup"`
+		UpdateMigrationPosterID struct {
+			Schedule string
+		} `ini:"cron.update_migration_poster_id"`
 	}{
 		UpdateMirror: struct {
 			Enabled    bool
@@ -114,6 +117,11 @@ var (
 			Schedule:   "@every 24h",
 			OlderThan:  24 * time.Hour,
 		},
+		UpdateMigrationPosterID: struct {
+			Schedule string
+		}{
+			Schedule: "@every 24h",
+		},
 	}
 )