gst-inspect: Fix ANSI escape sequence usage on Windows

Either disable it when it's not supported, or setup the console to
interpret them correctly when it's supported.

Closes gstreamer/gstreamer#351
9 jobs for fix-gst-inspect-win10 in 17 minutes and 25 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Preparation
passed #82977
gst indent

00:00:31

passed #82976
manifest

00:00:37

 
  Build
passed #82978
build fedora x86_64

00:03:48

 
  Test
passed #82988
check fedora

00:03:49

failed #82979
check fedora

00:00:14

 
  Full Builds
passed #82980
build android arm64 api28

00:03:33

passed #82982
build cerbero cross win32

00:09:10

passed #82983
build cerbero cross win64

00:07:06

passed #82981
build cerbero fedora x86_64

00:06:15