Run gst-indent through the files

This is required before we enabled an indent test in the CI.

gstreamer/gstreamer-project#33
3 jobs for alatiera/gst-indent in 7 minutes and 36 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Preparation
passed #51837
manifest

00:00:21

 
  Build
passed #51838
build fedora x86_64

00:03:23

 
  Full Builds
passed #51839
build android arm64 api28

00:03:51