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 10 minutes and 33 seconds (queued for 38 seconds)
Status Job ID Name Coverage
  Preparation
passed #51831
manifest

00:00:28

 
  Build
passed #51832
build fedora x86_64

00:03:45

 
  Full Builds
passed #51833
build android arm64 api28

00:06:19