* Moved some common SQL function tu public utls as they are used in plugins
* goimported file
* Added tests
* Created sub-package
* MOved SetupConnection to public sql utils
* option for auto inviting plugin to all shared channels.
* auto-invite remotes to shared channels when flag set
* fix unit test
* immediately ping new remotes; fix unique siteurl bug
* make i18n-extract
* fix translations
* plugin hooks for file attachments
* hook for profile image sync
* fix profile image sync
* fix unit test
---------
Co-authored-by: Mattermost Build <build@mattermost.com>
It was a good decision in hindsight to keep the public module as 0.x
because this would have been a breaking change again.
https://mattermost.atlassian.net/browse/MM-53032
```release-note
Changed the Go module path from github.com/mattermost/mattermost-server/server/v8 to github.com/mattermost/mattermost/server/v8.
For the public facing module, it's path is also changed from github.com/mattermost/mattermost-server/server/public to github.com/mattermost/mattermost/server/public
```
