Changes the default content disposition for WebP attachments
from *download* to *inline*.
Add WebP codec support side-effect to decode.go. To prevent future
issues caused by possible changes in emoji.go.
* Update preview.go
Was some complex logic in there. This should be simpler.
* Update preview.go
Make GenerateThumbnail code more verbose
* Update preview.go
Finish renaming targetHeight and targetWidth
---------
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
```
