Only trigger media scanner for media files #4999
Description
There's several places in the app where triggerMediaScan() is called. This happens irrespective of the mimeType which is available in some of these places.
For huge non-media files, this can slow down the system significantly and even crash with OOM errors. Furthermore when writing these files with a DocumentsProvider, maybe the user doesn't want these files get indexed by the media scanner?
Anyway, a simple fix would be to check the mimetype for media files and only trigger a scan for those.