package review for gi-harfbuzz

[Jens-Ulrik Petersen]

Hi,
I am working hard on building all the Haskell packages updated for F35
as part of the Fedora Change: GHC 8.10 and LTS 18.

Currently gi-harfbuzz is subpackaged in gi-pango,
but gi-pango no longer builds in the same source package as gi-harfbuzz
so it needs to be moved to a separate package (as it should be anyway).

Could someone please help to review the new ghc-gi-harfbuzz package:
https://bugzilla.redhat.com/show_bug.cgi?id=1988800 ?

Since Fedora 35 is branching on Tue it is a bit urgent: it is needed by
gi-gtk and gi-gdk.

For the similar reasons gi-gmodule also needs to be reviewed, though it can
only build with Stackage lts-18 (ie in my sidetag for f35):
https://bugzilla.redhat.com/show_bug.cgi?id=1991179

I would be nice to unbundle ghc-th-compat too, since it will be needed by 3
separate packages:
https://bugzilla.redhat.com/show_bug.cgi?id=1980776
So if someone could review that too it would be nice, though it is not a
blocker.

Thanks, Jens