glade: Support HdyHeaderGroup

This adds a libhandy Glade module adding the needed extra functions to
support HdyHeaderGroup and uses this rather than libhandy's shared
object directly.
2 jobs for glade in 4 minutes and 16 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Build
failed #2953
librem5
build-debian

00:01:57

passed #2954
librem5
build-debian-package

00:02:18

 
Name Stage Failure
failed
build-debian Build
../glade/glade-hdy-header-group.c:54:52: note: shadowed declaration is here
GladeXmlNode *node)
~~~~~~~~~~~~~~^~~~
cc1: all warnings being treated as errors
ninja: build stopped: subcommand failed.
Uploading artifacts...
_build: found 113 matching files
Uploading artifacts to coordinator... ok
id=2953 responseStatus=201 Created token=qTNmPfQx
ERROR: Job failed: exit code 1