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 9 minutes and 51 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Preparation
passed #51822
manifest

00:00:25

 
  Build
passed #51823
build fedora x86_64

00:05:38

 
  Full Builds
passed #51824
build android arm64 api28

00:03:47