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

docs/content/doc/advanced/config-cheat-sheet.zh-cn.md

@@ -196,7 +196,11 @@ menu:
 ### Cron - Repository Statistics Check (`cron.check_repo_stats`)
 
 - `RUN_AT_START`: 是否启动时自动运行仓库统计。
-- `SCHEDULE`: 藏亏统计时的Cron 语法，比如：`@every 24h`.
+- `SCHEDULE`: 仓库统计时的Cron 语法，比如：`@every 24h`.
+
+### Cron - Update Migration Poster ID (`cron.update_migration_post_id`)
+
+- `SCHEDULE`: **@every 24h** : 每次同步的间隔时间。此任务总是在启动时自动进行。
 
 ## Git (`git`)